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Finding the Fourth Proportional to 992,398.32, 1,369,509.68 and 539,689.32

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Solution

The fourth proportional to 992,398.32, 1,369,509.68 and 539,689.32 is: 744,771.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,398.32 : 1,369,509.68 = 539,689.32 : x
  2. Step 2: Convert to fraction form
    992,398.32/1,369,509.68 = 539,689.32/x
  3. Step 3: Cross multiply
    992,398.32x = 1,369,509.68 × 539,689.32
  4. Step 4: Simplify right side
    992,398.32x = 739,109,745,234.17
  5. Step 5: Solve for x
    x = 739,109,745,234.17/992,398.32
  6. Step 6: Final answer
    x = 744,771.26

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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.