Home / 861,528.69-1,189,021.07-494,149.14

Finding the Fourth Proportional to 861,528.69, 1,189,021.07 and 494,149.14

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Solution

The fourth proportional to 861,528.69, 1,189,021.07 and 494,149.14 is: 681,989.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,528.69 : 1,189,021.07 = 494,149.14 : x
  2. Step 2: Convert to fraction form
    861,528.69/1,189,021.07 = 494,149.14/x
  3. Step 3: Cross multiply
    861,528.69x = 1,189,021.07 × 494,149.14
  4. Step 4: Simplify right side
    861,528.69x = 587,553,740,417.75
  5. Step 5: Solve for x
    x = 587,553,740,417.75/861,528.69
  6. Step 6: Final answer
    x = 681,989.76

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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.