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Finding the Fourth Proportional to 708,340.49, 977,481.42 and 386,043.68

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Solution

The fourth proportional to 708,340.49, 977,481.42 and 386,043.68 is: 532,724.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,340.49 : 977,481.42 = 386,043.68 : x
  2. Step 2: Convert to fraction form
    708,340.49/977,481.42 = 386,043.68/x
  3. Step 3: Cross multiply
    708,340.49x = 977,481.42 × 386,043.68
  4. Step 4: Simplify right side
    708,340.49x = 377,350,524,508.43
  5. Step 5: Solve for x
    x = 377,350,524,508.43/708,340.49
  6. Step 6: Final answer
    x = 532,724.77

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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.