Home / 812,000.16-1,120,562.40-449,449.20

Finding the Fourth Proportional to 812,000.16, 1,120,562.40 and 449,449.20

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Solution

The fourth proportional to 812,000.16, 1,120,562.40 and 449,449.20 is: 620,241.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,000.16 : 1,120,562.40 = 449,449.20 : x
  2. Step 2: Convert to fraction form
    812,000.16/1,120,562.40 = 449,449.20/x
  3. Step 3: Cross multiply
    812,000.16x = 1,120,562.40 × 449,449.20
  4. Step 4: Simplify right side
    812,000.16x = 503,635,874,230.08
  5. Step 5: Solve for x
    x = 503,635,874,230.08/812,000.16
  6. Step 6: Final answer
    x = 620,241.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.