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Finding the Fourth Proportional to 708,356.13, 977,502.95 and 386,059.29

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Solution

The fourth proportional to 708,356.13, 977,502.95 and 386,059.29 is: 532,746.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,356.13 : 977,502.95 = 386,059.29 : x
  2. Step 2: Convert to fraction form
    708,356.13/977,502.95 = 386,059.29/x
  3. Step 3: Cross multiply
    708,356.13x = 977,502.95 × 386,059.29
  4. Step 4: Simplify right side
    708,356.13x = 377,374,092,919.61
  5. Step 5: Solve for x
    x = 377,374,092,919.61/708,356.13
  6. Step 6: Final answer
    x = 532,746.28

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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.