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Finding the Fourth Proportional to 721,712.73, 996,037.71 and 415,800.64

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Solution

The fourth proportional to 721,712.73, 996,037.71 and 415,800.64 is: 573,847.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,712.73 : 996,037.71 = 415,800.64 : x
  2. Step 2: Convert to fraction form
    721,712.73/996,037.71 = 415,800.64/x
  3. Step 3: Cross multiply
    721,712.73x = 996,037.71 × 415,800.64
  4. Step 4: Simplify right side
    721,712.73x = 414,153,119,306.81
  5. Step 5: Solve for x
    x = 414,153,119,306.81/721,712.73
  6. Step 6: Final answer
    x = 573,847.60

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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.