Home / 726,143.49-1,002,072.45-399,449.45

Finding the Fourth Proportional to 726,143.49, 1,002,072.45 and 399,449.45

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Solution

The fourth proportional to 726,143.49, 1,002,072.45 and 399,449.45 is: 551,237.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,143.49 : 1,002,072.45 = 399,449.45 : x
  2. Step 2: Convert to fraction form
    726,143.49/1,002,072.45 = 399,449.45/x
  3. Step 3: Cross multiply
    726,143.49x = 1,002,072.45 × 399,449.45
  4. Step 4: Simplify right side
    726,143.49x = 400,277,293,015.77
  5. Step 5: Solve for x
    x = 400,277,293,015.77/726,143.49
  6. Step 6: Final answer
    x = 551,237.18

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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.