Home / 520,093.35-780,140.03-431,446.95

Finding the Fourth Proportional to 520,093.35, 780,140.03 and 431,446.95

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Solution

The fourth proportional to 520,093.35, 780,140.03 and 431,446.95 is: 647,170.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,093.35 : 780,140.03 = 431,446.95 : x
  2. Step 2: Convert to fraction form
    520,093.35/780,140.03 = 431,446.95/x
  3. Step 3: Cross multiply
    520,093.35x = 780,140.03 × 431,446.95
  4. Step 4: Simplify right side
    520,093.35x = 336,589,034,359.17
  5. Step 5: Solve for x
    x = 336,589,034,359.17/520,093.35
  6. Step 6: Final answer
    x = 647,170.43

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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.