Home / 1,278,137,316.30-1,917,205,974.45-551,126,028.30

Finding the Fourth Proportional to 1,278,137,316.30, 1,917,205,974.45 and 551,126,028.30

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Solution

The fourth proportional to 1,278,137,316.30, 1,917,205,974.45 and 551,126,028.30 is: 826,689,042.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,137,316.30 : 1,917,205,974.45 = 551,126,028.30 : x
  2. Step 2: Convert to fraction form
    1,278,137,316.30/1,917,205,974.45 = 551,126,028.30/x
  3. Step 3: Cross multiply
    1,278,137,316.30x = 1,917,205,974.45 × 551,126,028.30
  4. Step 4: Simplify right side
    1,278,137,316.30x = 1,056,622,114,131,659,648
  5. Step 5: Solve for x
    x = 1,056,622,114,131,659,648/1,278,137,316.30
  6. Step 6: Final answer
    x = 826,689,042.45

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Half scale
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Double scale
Find fourth proportional to 1,278,137,317.30, 1,917,205,975.95 and 551,126,029.30
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.