Home / 861,976.87-1,189,528.03-499,610.92

Finding the Fourth Proportional to 861,976.87, 1,189,528.03 and 499,610.92

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Solution

The fourth proportional to 861,976.87, 1,189,528.03 and 499,610.92 is: 689,463.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,976.87 : 1,189,528.03 = 499,610.92 : x
  2. Step 2: Convert to fraction form
    861,976.87/1,189,528.03 = 499,610.92/x
  3. Step 3: Cross multiply
    861,976.87x = 1,189,528.03 × 499,610.92
  4. Step 4: Simplify right side
    861,976.87x = 594,301,184,988.39
  5. Step 5: Solve for x
    x = 594,301,184,988.39/861,976.87
  6. Step 6: Final answer
    x = 689,463.03

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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.