Home / 812,510.20-1,218,765.30-576,314.20

Finding the Fourth Proportional to 812,510.20, 1,218,765.30 and 576,314.20

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Solution

The fourth proportional to 812,510.20, 1,218,765.30 and 576,314.20 is: 864,471.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,510.20 : 1,218,765.30 = 576,314.20 : x
  2. Step 2: Convert to fraction form
    812,510.20/1,218,765.30 = 576,314.20/x
  3. Step 3: Cross multiply
    812,510.20x = 1,218,765.30 × 576,314.20
  4. Step 4: Simplify right side
    812,510.20x = 702,391,748,857.26
  5. Step 5: Solve for x
    x = 702,391,748,857.26/812,510.20
  6. Step 6: Final answer
    x = 864,471.30

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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.