Home / 619,081.60-928,622.40-406,505.20

Finding the Fourth Proportional to 619,081.60, 928,622.40 and 406,505.20

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Solution

The fourth proportional to 619,081.60, 928,622.40 and 406,505.20 is: 609,757.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,081.60 : 928,622.40 = 406,505.20 : x
  2. Step 2: Convert to fraction form
    619,081.60/928,622.40 = 406,505.20/x
  3. Step 3: Cross multiply
    619,081.60x = 928,622.40 × 406,505.20
  4. Step 4: Simplify right side
    619,081.60x = 377,489,834,436.48
  5. Step 5: Solve for x
    x = 377,489,834,436.48/619,081.60
  6. Step 6: Final answer
    x = 609,757.80

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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.