Home / 1,278,137,314.80-1,917,205,972.20-551,126,026.80

Finding the Fourth Proportional to 1,278,137,314.80, 1,917,205,972.20 and 551,126,026.80

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Solution

The fourth proportional to 1,278,137,314.80, 1,917,205,972.20 and 551,126,026.80 is: 826,689,040.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,137,314.80 : 1,917,205,972.20 = 551,126,026.80 : x
  2. Step 2: Convert to fraction form
    1,278,137,314.80/1,917,205,972.20 = 551,126,026.80/x
  3. Step 3: Cross multiply
    1,278,137,314.80x = 1,917,205,972.20 × 551,126,026.80
  4. Step 4: Simplify right side
    1,278,137,314.80x = 1,056,622,110,015,817,216
  5. Step 5: Solve for x
    x = 1,056,622,110,015,817,216/1,278,137,314.80
  6. Step 6: Final answer
    x = 826,689,040.20

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Double scale
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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.