Home / 763,422.20-1,145,133.30-447,716.60

Finding the Fourth Proportional to 763,422.20, 1,145,133.30 and 447,716.60

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Solution

The fourth proportional to 763,422.20, 1,145,133.30 and 447,716.60 is: 671,574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,422.20 : 1,145,133.30 = 447,716.60 : x
  2. Step 2: Convert to fraction form
    763,422.20/1,145,133.30 = 447,716.60/x
  3. Step 3: Cross multiply
    763,422.20x = 1,145,133.30 × 447,716.60
  4. Step 4: Simplify right side
    763,422.20x = 512,695,187,622.78
  5. Step 5: Solve for x
    x = 512,695,187,622.78/763,422.20
  6. Step 6: Final answer
    x = 671,574.90

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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.