Home / 726,022.71-1,001,935.81-399,349.61

Finding the Fourth Proportional to 726,022.71, 1,001,935.81 and 399,349.61

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Solution

The fourth proportional to 726,022.71, 1,001,935.81 and 399,349.61 is: 551,115.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,022.71 : 1,001,935.81 = 399,349.61 : x
  2. Step 2: Convert to fraction form
    726,022.71/1,001,935.81 = 399,349.61/x
  3. Step 3: Cross multiply
    726,022.71x = 1,001,935.81 × 399,349.61
  4. Step 4: Simplify right side
    726,022.71x = 400,122,674,215.30
  5. Step 5: Solve for x
    x = 400,122,674,215.30/726,022.71
  6. Step 6: Final answer
    x = 551,115.92

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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.