Home / 812,047.60-1,218,239.49-243,405.73

Finding the Fourth Proportional to 812,047.60, 1,218,239.49 and 243,405.73

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Solution

The fourth proportional to 812,047.60, 1,218,239.49 and 243,405.73 is: 365,158.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,047.60 : 1,218,239.49 = 243,405.73 : x
  2. Step 2: Convert to fraction form
    812,047.60/1,218,239.49 = 243,405.73/x
  3. Step 3: Cross multiply
    812,047.60x = 1,218,239.49 × 243,405.73
  4. Step 4: Simplify right side
    812,047.60x = 296,526,466,287.08
  5. Step 5: Solve for x
    x = 296,526,466,287.08/812,047.60
  6. Step 6: Final answer
    x = 365,158.97

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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.