Home / 819,139.35-1,227,821.47-419,231.82

Finding the Fourth Proportional to 819,139.35, 1,227,821.47 and 419,231.82

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Solution

The fourth proportional to 819,139.35, 1,227,821.47 and 419,231.82 is: 628,393.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,139.35 : 1,227,821.47 = 419,231.82 : x
  2. Step 2: Convert to fraction form
    819,139.35/1,227,821.47 = 419,231.82/x
  3. Step 3: Cross multiply
    819,139.35x = 1,227,821.47 × 419,231.82
  4. Step 4: Simplify right side
    819,139.35x = 514,741,829,503.18
  5. Step 5: Solve for x
    x = 514,741,829,503.18/819,139.35
  6. Step 6: Final answer
    x = 628,393.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.