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Finding the Fourth Proportional to 721,924.32, 1,083,951 and 402,699.92

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Solution

The fourth proportional to 721,924.32, 1,083,951 and 402,699.92 is: 604,643.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,924.32 : 1,083,951 = 402,699.92 : x
  2. Step 2: Convert to fraction form
    721,924.32/1,083,951 = 402,699.92/x
  3. Step 3: Cross multiply
    721,924.32x = 1,083,951 × 402,699.92
  4. Step 4: Simplify right side
    721,924.32x = 436,506,980,983.92
  5. Step 5: Solve for x
    x = 436,506,980,983.92/721,924.32
  6. Step 6: Final answer
    x = 604,643.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.