Home / 447,729.20-671,593.80-398,740.40

Finding the Fourth Proportional to 447,729.20, 671,593.80 and 398,740.40

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Solution

The fourth proportional to 447,729.20, 671,593.80 and 398,740.40 is: 598,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,729.20 : 671,593.80 = 398,740.40 : x
  2. Step 2: Convert to fraction form
    447,729.20/671,593.80 = 398,740.40/x
  3. Step 3: Cross multiply
    447,729.20x = 671,593.80 × 398,740.40
  4. Step 4: Simplify right side
    447,729.20x = 267,791,580,449.52
  5. Step 5: Solve for x
    x = 267,791,580,449.52/447,729.20
  6. Step 6: Final answer
    x = 598,110.60

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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.