Home / 763,432.20-1,145,148.30-447,726.60

Finding the Fourth Proportional to 763,432.20, 1,145,148.30 and 447,726.60

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Solution

The fourth proportional to 763,432.20, 1,145,148.30 and 447,726.60 is: 671,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,432.20 : 1,145,148.30 = 447,726.60 : x
  2. Step 2: Convert to fraction form
    763,432.20/1,145,148.30 = 447,726.60/x
  3. Step 3: Cross multiply
    763,432.20x = 1,145,148.30 × 447,726.60
  4. Step 4: Simplify right side
    763,432.20x = 512,713,354,854.78
  5. Step 5: Solve for x
    x = 512,713,354,854.78/763,432.20
  6. Step 6: Final answer
    x = 671,589.90

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Double scale
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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.