Home / 543,630.20-815,445.30-319,098.20

Finding the Fourth Proportional to 543,630.20, 815,445.30 and 319,098.20

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Solution

The fourth proportional to 543,630.20, 815,445.30 and 319,098.20 is: 478,647.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,630.20 : 815,445.30 = 319,098.20 : x
  2. Step 2: Convert to fraction form
    543,630.20/815,445.30 = 319,098.20/x
  3. Step 3: Cross multiply
    543,630.20x = 815,445.30 × 319,098.20
  4. Step 4: Simplify right side
    543,630.20x = 260,207,127,428.46
  5. Step 5: Solve for x
    x = 260,207,127,428.46/543,630.20
  6. Step 6: Final answer
    x = 478,647.30

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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.