Home / 726,320.86-1,002,330.38-399,638.07

Finding the Fourth Proportional to 726,320.86, 1,002,330.38 and 399,638.07

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Solution

The fourth proportional to 726,320.86, 1,002,330.38 and 399,638.07 is: 551,504.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,320.86 : 1,002,330.38 = 399,638.07 : x
  2. Step 2: Convert to fraction form
    726,320.86/1,002,330.38 = 399,638.07/x
  3. Step 3: Cross multiply
    726,320.86x = 1,002,330.38 × 399,638.07
  4. Step 4: Simplify right side
    726,320.86x = 400,569,379,564.66
  5. Step 5: Solve for x
    x = 400,569,379,564.66/726,320.86
  6. Step 6: Final answer
    x = 551,504.72

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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.