Home / 728,469.60-1,093,352.40-428,575.20

Finding the Fourth Proportional to 728,469.60, 1,093,352.40 and 428,575.20

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Solution

The fourth proportional to 728,469.60, 1,093,352.40 and 428,575.20 is: 643,244.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,469.60 : 1,093,352.40 = 428,575.20 : x
  2. Step 2: Convert to fraction form
    728,469.60/1,093,352.40 = 428,575.20/x
  3. Step 3: Cross multiply
    728,469.60x = 1,093,352.40 × 428,575.20
  4. Step 4: Simplify right side
    728,469.60x = 468,583,723,500.48
  5. Step 5: Solve for x
    x = 468,583,723,500.48/728,469.60
  6. Step 6: Final answer
    x = 643,244.03

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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.