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Finding the Fourth Proportional to 721,970.16, 996,005.92 and 435,331

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Solution

The fourth proportional to 721,970.16, 996,005.92 and 435,331 is: 600,568.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,970.16 : 996,005.92 = 435,331 : x
  2. Step 2: Convert to fraction form
    721,970.16/996,005.92 = 435,331/x
  3. Step 3: Cross multiply
    721,970.16x = 996,005.92 × 435,331
  4. Step 4: Simplify right side
    721,970.16x = 433,592,253,159.52
  5. Step 5: Solve for x
    x = 433,592,253,159.52/721,970.16
  6. Step 6: Final answer
    x = 600,568.11

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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.