Home / 819,108.90-1,227,846.87-391,856.58

Finding the Fourth Proportional to 819,108.90, 1,227,846.87 and 391,856.58

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Solution

The fourth proportional to 819,108.90, 1,227,846.87 and 391,856.58 is: 587,394.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,108.90 : 1,227,846.87 = 391,856.58 : x
  2. Step 2: Convert to fraction form
    819,108.90/1,227,846.87 = 391,856.58/x
  3. Step 3: Cross multiply
    819,108.90x = 1,227,846.87 × 391,856.58
  4. Step 4: Simplify right side
    819,108.90x = 481,139,875,241.91
  5. Step 5: Solve for x
    x = 481,139,875,241.91/819,108.90
  6. Step 6: Final answer
    x = 587,394.27

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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.