Home / 815,574.72-1,221,981.60-499,371.36

Finding the Fourth Proportional to 815,574.72, 1,221,981.60 and 499,371.36

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Solution

The fourth proportional to 815,574.72, 1,221,981.60 and 499,371.36 is: 748,211.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,574.72 : 1,221,981.60 = 499,371.36 : x
  2. Step 2: Convert to fraction form
    815,574.72/1,221,981.60 = 499,371.36/x
  3. Step 3: Cross multiply
    815,574.72x = 1,221,981.60 × 499,371.36
  4. Step 4: Simplify right side
    815,574.72x = 610,222,613,486.98
  5. Step 5: Solve for x
    x = 610,222,613,486.98/815,574.72
  6. Step 6: Final answer
    x = 748,211.78

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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.