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Finding the Fourth Proportional to 709,938.04, 979,717.56 and 387,655.24

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Solution

The fourth proportional to 709,938.04, 979,717.56 and 387,655.24 is: 534,965.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,938.04 : 979,717.56 = 387,655.24 : x
  2. Step 2: Convert to fraction form
    709,938.04/979,717.56 = 387,655.24/x
  3. Step 3: Cross multiply
    709,938.04x = 979,717.56 × 387,655.24
  4. Step 4: Simplify right side
    709,938.04x = 379,792,645,854.01
  5. Step 5: Solve for x
    x = 379,792,645,854.01/709,938.04
  6. Step 6: Final answer
    x = 534,965.90

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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.