Home / 811,948.16-1,218,272.24-338,726.72

Finding the Fourth Proportional to 811,948.16, 1,218,272.24 and 338,726.72

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Solution

The fourth proportional to 811,948.16, 1,218,272.24 and 338,726.72 is: 508,236.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,948.16 : 1,218,272.24 = 338,726.72 : x
  2. Step 2: Convert to fraction form
    811,948.16/1,218,272.24 = 338,726.72/x
  3. Step 3: Cross multiply
    811,948.16x = 1,218,272.24 × 338,726.72
  4. Step 4: Simplify right side
    811,948.16x = 412,661,359,922.25
  5. Step 5: Solve for x
    x = 412,661,359,922.25/811,948.16
  6. Step 6: Final answer
    x = 508,236.09

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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.