Home / 726,107.93-1,001,998.03-399,400.22

Finding the Fourth Proportional to 726,107.93, 1,001,998.03 and 399,400.22

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Solution

The fourth proportional to 726,107.93, 1,001,998.03 and 399,400.22 is: 551,155.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,107.93 : 1,001,998.03 = 399,400.22 : x
  2. Step 2: Convert to fraction form
    726,107.93/1,001,998.03 = 399,400.22/x
  3. Step 3: Cross multiply
    726,107.93x = 1,001,998.03 × 399,400.22
  4. Step 4: Simplify right side
    726,107.93x = 400,198,233,621.57
  5. Step 5: Solve for x
    x = 400,198,233,621.57/726,107.93
  6. Step 6: Final answer
    x = 551,155.30

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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.