Home / 1,278,399.24-1,918,331.52-520,100.73

Finding the Fourth Proportional to 1,278,399.24, 1,918,331.52 and 520,100.73

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Solution

The fourth proportional to 1,278,399.24, 1,918,331.52 and 520,100.73 is: 780,449.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,399.24 : 1,918,331.52 = 520,100.73 : x
  2. Step 2: Convert to fraction form
    1,278,399.24/1,918,331.52 = 520,100.73/x
  3. Step 3: Cross multiply
    1,278,399.24x = 1,918,331.52 × 520,100.73
  4. Step 4: Simplify right side
    1,278,399.24x = 997,725,623,934.01
  5. Step 5: Solve for x
    x = 997,725,623,934.01/1,278,399.24
  6. Step 6: Final answer
    x = 780,449.17

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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.