Home / 1,278,381.24-1,918,304.52-520,082.73

Finding the Fourth Proportional to 1,278,381.24, 1,918,304.52 and 520,082.73

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Solution

The fourth proportional to 1,278,381.24, 1,918,304.52 and 520,082.73 is: 780,422.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,381.24 : 1,918,304.52 = 520,082.73 : x
  2. Step 2: Convert to fraction form
    1,278,381.24/1,918,304.52 = 520,082.73/x
  3. Step 3: Cross multiply
    1,278,381.24x = 1,918,304.52 × 520,082.73
  4. Step 4: Simplify right side
    1,278,381.24x = 997,677,051,732.94
  5. Step 5: Solve for x
    x = 997,677,051,732.94/1,278,381.24
  6. Step 6: Final answer
    x = 780,422.16

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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.