Home / 721,790.19-995,983.02-415,966.86

Finding the Fourth Proportional to 721,790.19, 995,983.02 and 415,966.86

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Solution

The fourth proportional to 721,790.19, 995,983.02 and 415,966.86 is: 573,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,790.19 : 995,983.02 = 415,966.86 : x
  2. Step 2: Convert to fraction form
    721,790.19/995,983.02 = 415,966.86/x
  3. Step 3: Cross multiply
    721,790.19x = 995,983.02 × 415,966.86
  4. Step 4: Simplify right side
    721,790.19x = 414,295,929,442.72
  5. Step 5: Solve for x
    x = 414,295,929,442.72/721,790.19
  6. Step 6: Final answer
    x = 573,983.87

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Double scale
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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.