Home / 621,819.40-932,729.10-472,520.20

Finding the Fourth Proportional to 621,819.40, 932,729.10 and 472,520.20

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Solution

The fourth proportional to 621,819.40, 932,729.10 and 472,520.20 is: 708,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,819.40 : 932,729.10 = 472,520.20 : x
  2. Step 2: Convert to fraction form
    621,819.40/932,729.10 = 472,520.20/x
  3. Step 3: Cross multiply
    621,819.40x = 932,729.10 × 472,520.20
  4. Step 4: Simplify right side
    621,819.40x = 440,733,340,877.82
  5. Step 5: Solve for x
    x = 440,733,340,877.82/621,819.40
  6. Step 6: Final answer
    x = 708,780.30

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Half scale
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Double scale
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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.