Home / 861,346.75-1,188,658.51-479,463.74

Finding the Fourth Proportional to 861,346.75, 1,188,658.51 and 479,463.74

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Solution

The fourth proportional to 861,346.75, 1,188,658.51 and 479,463.74 is: 661,659.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,346.75 : 1,188,658.51 = 479,463.74 : x
  2. Step 2: Convert to fraction form
    861,346.75/1,188,658.51 = 479,463.74/x
  3. Step 3: Cross multiply
    861,346.75x = 1,188,658.51 × 479,463.74
  4. Step 4: Simplify right side
    861,346.75x = 569,918,654,787.43
  5. Step 5: Solve for x
    x = 569,918,654,787.43/861,346.75
  6. Step 6: Final answer
    x = 661,659.96

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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.