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Finding the Fourth Proportional to 721,801.64, 996,132.67 and 415,872.54

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Solution

The fourth proportional to 721,801.64, 996,132.67 and 415,872.54 is: 573,930.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,801.64 : 996,132.67 = 415,872.54 : x
  2. Step 2: Convert to fraction form
    721,801.64/996,132.67 = 415,872.54/x
  3. Step 3: Cross multiply
    721,801.64x = 996,132.67 × 415,872.54
  4. Step 4: Simplify right side
    721,801.64x = 414,264,222,610.20
  5. Step 5: Solve for x
    x = 414,264,222,610.20/721,801.64
  6. Step 6: Final answer
    x = 573,930.84

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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.