Home / 861,142.74-1,291,712.81-292,582.86

Finding the Fourth Proportional to 861,142.74, 1,291,712.81 and 292,582.86

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Solution

The fourth proportional to 861,142.74, 1,291,712.81 and 292,582.86 is: 438,873.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,142.74 : 1,291,712.81 = 292,582.86 : x
  2. Step 2: Convert to fraction form
    861,142.74/1,291,712.81 = 292,582.86/x
  3. Step 3: Cross multiply
    861,142.74x = 1,291,712.81 × 292,582.86
  4. Step 4: Simplify right side
    861,142.74x = 377,933,026,785.52
  5. Step 5: Solve for x
    x = 377,933,026,785.52/861,142.74
  6. Step 6: Final answer
    x = 438,873.85

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.