Home / 664,138.10-916,581.20-406,165.97

Finding the Fourth Proportional to 664,138.10, 916,581.20 and 406,165.97

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Solution

The fourth proportional to 664,138.10, 916,581.20 and 406,165.97 is: 560,552.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,138.10 : 916,581.20 = 406,165.97 : x
  2. Step 2: Convert to fraction form
    664,138.10/916,581.20 = 406,165.97/x
  3. Step 3: Cross multiply
    664,138.10x = 916,581.20 × 406,165.97
  4. Step 4: Simplify right side
    664,138.10x = 372,284,092,442.39
  5. Step 5: Solve for x
    x = 372,284,092,442.39/664,138.10
  6. Step 6: Final answer
    x = 560,552.23

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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.