Home / 726,106.43-1,001,995.96-399,398.72

Finding the Fourth Proportional to 726,106.43, 1,001,995.96 and 399,398.72

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Solution

The fourth proportional to 726,106.43, 1,001,995.96 and 399,398.72 is: 551,153.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,106.43 : 1,001,995.96 = 399,398.72 : x
  2. Step 2: Convert to fraction form
    726,106.43/1,001,995.96 = 399,398.72/x
  3. Step 3: Cross multiply
    726,106.43x = 1,001,995.96 × 399,398.72
  4. Step 4: Simplify right side
    726,106.43x = 400,195,897,860.70
  5. Step 5: Solve for x
    x = 400,195,897,860.70/726,106.43
  6. Step 6: Final answer
    x = 551,153.22

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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.