Home / 812,726.30-1,121,549.94-445,200.49

Finding the Fourth Proportional to 812,726.30, 1,121,549.94 and 445,200.49

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Solution

The fourth proportional to 812,726.30, 1,121,549.94 and 445,200.49 is: 614,369.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,726.30 : 1,121,549.94 = 445,200.49 : x
  2. Step 2: Convert to fraction form
    812,726.30/1,121,549.94 = 445,200.49/x
  3. Step 3: Cross multiply
    812,726.30x = 1,121,549.94 × 445,200.49
  4. Step 4: Simplify right side
    812,726.30x = 499,314,585,651.35
  5. Step 5: Solve for x
    x = 499,314,585,651.35/812,726.30
  6. Step 6: Final answer
    x = 614,369.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.