Home / 861,345.75-1,188,657.13-479,462.74

Finding the Fourth Proportional to 861,345.75, 1,188,657.13 and 479,462.74

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Solution

The fourth proportional to 861,345.75, 1,188,657.13 and 479,462.74 is: 661,658.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,345.75 : 1,188,657.13 = 479,462.74 : x
  2. Step 2: Convert to fraction form
    861,345.75/1,188,657.13 = 479,462.74/x
  3. Step 3: Cross multiply
    861,345.75x = 1,188,657.13 × 479,462.74
  4. Step 4: Simplify right side
    861,345.75x = 569,916,804,470.34
  5. Step 5: Solve for x
    x = 569,916,804,470.34/861,345.75
  6. Step 6: Final answer
    x = 661,658.58

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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.