Home / 627,819.60-941,729.40-391,429.20

Finding the Fourth Proportional to 627,819.60, 941,729.40 and 391,429.20

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Solution

The fourth proportional to 627,819.60, 941,729.40 and 391,429.20 is: 587,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,819.60 : 941,729.40 = 391,429.20 : x
  2. Step 2: Convert to fraction form
    627,819.60/941,729.40 = 391,429.20/x
  3. Step 3: Cross multiply
    627,819.60x = 941,729.40 × 391,429.20
  4. Step 4: Simplify right side
    627,819.60x = 368,620,385,658.48
  5. Step 5: Solve for x
    x = 368,620,385,658.48/627,819.60
  6. Step 6: Final answer
    x = 587,143.80

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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.