Home / 691,062.70-1,036,594.05-392,127.14

Finding the Fourth Proportional to 691,062.70, 1,036,594.05 and 392,127.14

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Solution

The fourth proportional to 691,062.70, 1,036,594.05 and 392,127.14 is: 588,190.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,062.70 : 1,036,594.05 = 392,127.14 : x
  2. Step 2: Convert to fraction form
    691,062.70/1,036,594.05 = 392,127.14/x
  3. Step 3: Cross multiply
    691,062.70x = 1,036,594.05 × 392,127.14
  4. Step 4: Simplify right side
    691,062.70x = 406,476,660,167.52
  5. Step 5: Solve for x
    x = 406,476,660,167.52/691,062.70
  6. Step 6: Final answer
    x = 588,190.71

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Double scale
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Similar ratio
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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.