Home / 1,278,385.24-1,918,310.52-520,086.73

Finding the Fourth Proportional to 1,278,385.24, 1,918,310.52 and 520,086.73

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Solution

The fourth proportional to 1,278,385.24, 1,918,310.52 and 520,086.73 is: 780,428.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,385.24 : 1,918,310.52 = 520,086.73 : x
  2. Step 2: Convert to fraction form
    1,278,385.24/1,918,310.52 = 520,086.73/x
  3. Step 3: Cross multiply
    1,278,385.24x = 1,918,310.52 × 520,086.73
  4. Step 4: Simplify right side
    1,278,385.24x = 997,687,845,471.40
  5. Step 5: Solve for x
    x = 997,687,845,471.40/1,278,385.24
  6. Step 6: Final answer
    x = 780,428.16

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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.