Home / 726,472.49-1,002,506.81-399,754.94

Finding the Fourth Proportional to 726,472.49, 1,002,506.81 and 399,754.94

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Solution

The fourth proportional to 726,472.49, 1,002,506.81 and 399,754.94 is: 551,647.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,472.49 : 1,002,506.81 = 399,754.94 : x
  2. Step 2: Convert to fraction form
    726,472.49/1,002,506.81 = 399,754.94/x
  3. Step 3: Cross multiply
    726,472.49x = 1,002,506.81 × 399,754.94
  4. Step 4: Simplify right side
    726,472.49x = 400,757,042,669.83
  5. Step 5: Solve for x
    x = 400,757,042,669.83/726,472.49
  6. Step 6: Final answer
    x = 551,647.93

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1.5x scale

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.