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Finding the Fourth Proportional to 683,318.80, 1,024,978.20 and 435,101.20

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Solution

The fourth proportional to 683,318.80, 1,024,978.20 and 435,101.20 is: 652,651.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,318.80 : 1,024,978.20 = 435,101.20 : x
  2. Step 2: Convert to fraction form
    683,318.80/1,024,978.20 = 435,101.20/x
  3. Step 3: Cross multiply
    683,318.80x = 1,024,978.20 × 435,101.20
  4. Step 4: Simplify right side
    683,318.80x = 445,969,244,793.84
  5. Step 5: Solve for x
    x = 445,969,244,793.84/683,318.80
  6. Step 6: Final answer
    x = 652,651.80

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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.