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Finding the Fourth Proportional to 539,377.92, 744,621.40 and 394,020.49

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Solution

The fourth proportional to 539,377.92, 744,621.40 and 394,020.49 is: 543,952.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,377.92 : 744,621.40 = 394,020.49 : x
  2. Step 2: Convert to fraction form
    539,377.92/744,621.40 = 394,020.49/x
  3. Step 3: Cross multiply
    539,377.92x = 744,621.40 × 394,020.49
  4. Step 4: Simplify right side
    539,377.92x = 293,396,088,892.49
  5. Step 5: Solve for x
    x = 293,396,088,892.49/539,377.92
  6. Step 6: Final answer
    x = 543,952.72

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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.