Home / 2,138,947.88-3,208,387.40-519,729.53

Finding the Fourth Proportional to 2,138,947.88, 3,208,387.40 and 519,729.53

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Solution

The fourth proportional to 2,138,947.88, 3,208,387.40 and 519,729.53 is: 779,585.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,947.88 : 3,208,387.40 = 519,729.53 : x
  2. Step 2: Convert to fraction form
    2,138,947.88/3,208,387.40 = 519,729.53/x
  3. Step 3: Cross multiply
    2,138,947.88x = 3,208,387.40 × 519,729.53
  4. Step 4: Simplify right side
    2,138,947.88x = 1,667,493,672,861.27
  5. Step 5: Solve for x
    x = 1,667,493,672,861.27/2,138,947.88
  6. Step 6: Final answer
    x = 779,585.93

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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.