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Finding the Fourth Proportional to 435,645.20, 653,467.80 and 329,200.40

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Solution

The fourth proportional to 435,645.20, 653,467.80 and 329,200.40 is: 493,800.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,645.20 : 653,467.80 = 329,200.40 : x
  2. Step 2: Convert to fraction form
    435,645.20/653,467.80 = 329,200.40/x
  3. Step 3: Cross multiply
    435,645.20x = 653,467.80 × 329,200.40
  4. Step 4: Simplify right side
    435,645.20x = 215,121,861,147.12
  5. Step 5: Solve for x
    x = 215,121,861,147.12/435,645.20
  6. Step 6: Final answer
    x = 493,800.60

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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.