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Finding the Fourth Proportional to 721,889.20, 996,230.61 and 415,941.87

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Solution

The fourth proportional to 721,889.20, 996,230.61 and 415,941.87 is: 574,013.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,889.20 : 996,230.61 = 415,941.87 : x
  2. Step 2: Convert to fraction form
    721,889.20/996,230.61 = 415,941.87/x
  3. Step 3: Cross multiply
    721,889.20x = 996,230.61 × 415,941.87
  4. Step 4: Simplify right side
    721,889.20x = 414,374,022,874.64
  5. Step 5: Solve for x
    x = 414,374,022,874.64/721,889.20
  6. Step 6: Final answer
    x = 574,013.33

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1.5x scale

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.