Home / 726,273.78-1,002,218.06-399,580.63

Finding the Fourth Proportional to 726,273.78, 1,002,218.06 and 399,580.63

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Solution

The fourth proportional to 726,273.78, 1,002,218.06 and 399,580.63 is: 551,399.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,273.78 : 1,002,218.06 = 399,580.63 : x
  2. Step 2: Convert to fraction form
    726,273.78/1,002,218.06 = 399,580.63/x
  3. Step 3: Cross multiply
    726,273.78x = 1,002,218.06 × 399,580.63
  4. Step 4: Simplify right side
    726,273.78x = 400,466,922,305.58
  5. Step 5: Solve for x
    x = 400,466,922,305.58/726,273.78
  6. Step 6: Final answer
    x = 551,399.40

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Double scale
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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.