Home / 991,949.40-1,488,345.30-542,144.79

Finding the Fourth Proportional to 991,949.40, 1,488,345.30 and 542,144.79

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Solution

The fourth proportional to 991,949.40, 1,488,345.30 and 542,144.79 is: 813,447.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,949.40 : 1,488,345.30 = 542,144.79 : x
  2. Step 2: Convert to fraction form
    991,949.40/1,488,345.30 = 542,144.79/x
  3. Step 3: Cross multiply
    991,949.40x = 1,488,345.30 × 542,144.79
  4. Step 4: Simplify right side
    991,949.40x = 806,898,650,115.99
  5. Step 5: Solve for x
    x = 806,898,650,115.99/991,949.40
  6. Step 6: Final answer
    x = 813,447.39

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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.