Home / 726,142.49-1,002,071.08-399,448.46

Finding the Fourth Proportional to 726,142.49, 1,002,071.08 and 399,448.46

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Solution

The fourth proportional to 726,142.49, 1,002,071.08 and 399,448.46 is: 551,235.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,142.49 : 1,002,071.08 = 399,448.46 : x
  2. Step 2: Convert to fraction form
    726,142.49/1,002,071.08 = 399,448.46/x
  3. Step 3: Cross multiply
    726,142.49x = 1,002,071.08 × 399,448.46
  4. Step 4: Simplify right side
    726,142.49x = 400,275,752,721.03
  5. Step 5: Solve for x
    x = 400,275,752,721.03/726,142.49
  6. Step 6: Final answer
    x = 551,235.82

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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.