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Finding the Fourth Proportional to 433,812.60, 650,718.90 and 389,635.20

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Solution

The fourth proportional to 433,812.60, 650,718.90 and 389,635.20 is: 584,452.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,812.60 : 650,718.90 = 389,635.20 : x
  2. Step 2: Convert to fraction form
    433,812.60/650,718.90 = 389,635.20/x
  3. Step 3: Cross multiply
    433,812.60x = 650,718.90 × 389,635.20
  4. Step 4: Simplify right side
    433,812.60x = 253,542,988,745.28
  5. Step 5: Solve for x
    x = 253,542,988,745.28/433,812.60
  6. Step 6: Final answer
    x = 584,452.80

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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.