Home / 726,107.43-1,001,997.34-399,399.72

Finding the Fourth Proportional to 726,107.43, 1,001,997.34 and 399,399.72

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Solution

The fourth proportional to 726,107.43, 1,001,997.34 and 399,399.72 is: 551,154.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,107.43 : 1,001,997.34 = 399,399.72 : x
  2. Step 2: Convert to fraction form
    726,107.43/1,001,997.34 = 399,399.72/x
  3. Step 3: Cross multiply
    726,107.43x = 1,001,997.34 × 399,399.72
  4. Step 4: Simplify right side
    726,107.43x = 400,197,457,036.75
  5. Step 5: Solve for x
    x = 400,197,457,036.75/726,107.43
  6. Step 6: Final answer
    x = 551,154.61

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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.