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Finding the Fourth Proportional to 488,851.40, 732,839.70 and 320,452.40

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Solution

The fourth proportional to 488,851.40, 732,839.70 and 320,452.40 is: 480,391.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,851.40 : 732,839.70 = 320,452.40 : x
  2. Step 2: Convert to fraction form
    488,851.40/732,839.70 = 320,452.40/x
  3. Step 3: Cross multiply
    488,851.40x = 732,839.70 × 320,452.40
  4. Step 4: Simplify right side
    488,851.40x = 234,840,240,680.28
  5. Step 5: Solve for x
    x = 234,840,240,680.28/488,851.40
  6. Step 6: Final answer
    x = 480,391.88

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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.