Home / 812,701.20-1,218,614.40-338,851.20

Finding the Fourth Proportional to 812,701.20, 1,218,614.40 and 338,851.20

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Solution

The fourth proportional to 812,701.20, 1,218,614.40 and 338,851.20 is: 508,094.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,701.20 : 1,218,614.40 = 338,851.20 : x
  2. Step 2: Convert to fraction form
    812,701.20/1,218,614.40 = 338,851.20/x
  3. Step 3: Cross multiply
    812,701.20x = 1,218,614.40 × 338,851.20
  4. Step 4: Simplify right side
    812,701.20x = 412,928,951,777.28
  5. Step 5: Solve for x
    x = 412,928,951,777.28/812,701.20
  6. Step 6: Final answer
    x = 508,094.43

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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.