Home / 725,875.38-1,001,420.16-419,895

Finding the Fourth Proportional to 725,875.38, 1,001,420.16 and 419,895

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Solution

The fourth proportional to 725,875.38, 1,001,420.16 and 419,895 is: 579,288.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,875.38 : 1,001,420.16 = 419,895 : x
  2. Step 2: Convert to fraction form
    725,875.38/1,001,420.16 = 419,895/x
  3. Step 3: Cross multiply
    725,875.38x = 1,001,420.16 × 419,895
  4. Step 4: Simplify right side
    725,875.38x = 420,491,318,083.20
  5. Step 5: Solve for x
    x = 420,491,318,083.20/725,875.38
  6. Step 6: Final answer
    x = 579,288.58

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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.