Home / 7,178,539.47-9,906,502.53-3,915,354.21

Finding the Fourth Proportional to 7,178,539.47, 9,906,502.53 and 3,915,354.21

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Solution

The fourth proportional to 7,178,539.47, 9,906,502.53 and 3,915,354.21 is: 5,403,253.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178,539.47 : 9,906,502.53 = 3,915,354.21 : x
  2. Step 2: Convert to fraction form
    7,178,539.47/9,906,502.53 = 3,915,354.21/x
  3. Step 3: Cross multiply
    7,178,539.47x = 9,906,502.53 × 3,915,354.21
  4. Step 4: Simplify right side
    7,178,539.47x = 38,787,466,387,211.15
  5. Step 5: Solve for x
    x = 38,787,466,387,211.15/7,178,539.47
  6. Step 6: Final answer
    x = 5,403,253.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.