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Finding the Fourth Proportional to 721,599.12, 995,912.55 and 415,615.95

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Solution

The fourth proportional to 721,599.12, 995,912.55 and 415,615.95 is: 573,610.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,599.12 : 995,912.55 = 415,615.95 : x
  2. Step 2: Convert to fraction form
    721,599.12/995,912.55 = 415,615.95/x
  3. Step 3: Cross multiply
    721,599.12x = 995,912.55 × 415,615.95
  4. Step 4: Simplify right side
    721,599.12x = 413,917,140,585.17
  5. Step 5: Solve for x
    x = 413,917,140,585.17/721,599.12
  6. Step 6: Final answer
    x = 573,610.93

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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.