Home / 687,790.20-1,031,685.30-641,134.20

Finding the Fourth Proportional to 687,790.20, 1,031,685.30 and 641,134.20

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Solution

The fourth proportional to 687,790.20, 1,031,685.30 and 641,134.20 is: 961,701.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,790.20 : 1,031,685.30 = 641,134.20 : x
  2. Step 2: Convert to fraction form
    687,790.20/1,031,685.30 = 641,134.20/x
  3. Step 3: Cross multiply
    687,790.20x = 1,031,685.30 × 641,134.20
  4. Step 4: Simplify right side
    687,790.20x = 661,448,729,467.26
  5. Step 5: Solve for x
    x = 661,448,729,467.26/687,790.20
  6. Step 6: Final answer
    x = 961,701.30

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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.