Home / 687,634.20-1,031,451.30-615,317.40

Finding the Fourth Proportional to 687,634.20, 1,031,451.30 and 615,317.40

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Solution

The fourth proportional to 687,634.20, 1,031,451.30 and 615,317.40 is: 922,976.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,634.20 : 1,031,451.30 = 615,317.40 : x
  2. Step 2: Convert to fraction form
    687,634.20/1,031,451.30 = 615,317.40/x
  3. Step 3: Cross multiply
    687,634.20x = 1,031,451.30 × 615,317.40
  4. Step 4: Simplify right side
    687,634.20x = 634,669,932,142.62
  5. Step 5: Solve for x
    x = 634,669,932,142.62/687,634.20
  6. Step 6: Final answer
    x = 922,976.10

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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.