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Finding the Fourth Proportional to 605,421.60, 908,132.40 and 576,391.20

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Solution

The fourth proportional to 605,421.60, 908,132.40 and 576,391.20 is: 864,586.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,421.60 : 908,132.40 = 576,391.20 : x
  2. Step 2: Convert to fraction form
    605,421.60/908,132.40 = 576,391.20/x
  3. Step 3: Cross multiply
    605,421.60x = 908,132.40 × 576,391.20
  4. Step 4: Simplify right side
    605,421.60x = 523,439,523,794.88
  5. Step 5: Solve for x
    x = 523,439,523,794.88/605,421.60
  6. Step 6: Final answer
    x = 864,586.80

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Similar ratio
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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.