Home / 1,278,166,230.80-1,917,249,346.20-658,293,448.40

Finding the Fourth Proportional to 1,278,166,230.80, 1,917,249,346.20 and 658,293,448.40

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Solution

The fourth proportional to 1,278,166,230.80, 1,917,249,346.20 and 658,293,448.40 is: 987,440,172.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,166,230.80 : 1,917,249,346.20 = 658,293,448.40 : x
  2. Step 2: Convert to fraction form
    1,278,166,230.80/1,917,249,346.20 = 658,293,448.40/x
  3. Step 3: Cross multiply
    1,278,166,230.80x = 1,917,249,346.20 × 658,293,448.40
  4. Step 4: Simplify right side
    1,278,166,230.80x = 1,262,112,683,552,643,328
  5. Step 5: Solve for x
    x = 1,262,112,683,552,643,328/1,278,166,230.80
  6. Step 6: Final answer
    x = 987,440,172.60

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Half scale
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Double scale
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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.