Home / 804,468.20-1,207,139.70-331,201.40

Finding the Fourth Proportional to 804,468.20, 1,207,139.70 and 331,201.40

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Solution

The fourth proportional to 804,468.20, 1,207,139.70 and 331,201.40 is: 496,982.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,468.20 : 1,207,139.70 = 331,201.40 : x
  2. Step 2: Convert to fraction form
    804,468.20/1,207,139.70 = 331,201.40/x
  3. Step 3: Cross multiply
    804,468.20x = 1,207,139.70 × 331,201.40
  4. Step 4: Simplify right side
    804,468.20x = 399,806,358,635.58
  5. Step 5: Solve for x
    x = 399,806,358,635.58/804,468.20
  6. Step 6: Final answer
    x = 496,982.18

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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.