Home / 389,869.20-584,803.80-123,650.55

Finding the Fourth Proportional to 389,869.20, 584,803.80 and 123,650.55

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Solution

The fourth proportional to 389,869.20, 584,803.80 and 123,650.55 is: 185,475.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,869.20 : 584,803.80 = 123,650.55 : x
  2. Step 2: Convert to fraction form
    389,869.20/584,803.80 = 123,650.55/x
  3. Step 3: Cross multiply
    389,869.20x = 584,803.80 × 123,650.55
  4. Step 4: Simplify right side
    389,869.20x = 72,311,311,512.09
  5. Step 5: Solve for x
    x = 72,311,311,512.09/389,869.20
  6. Step 6: Final answer
    x = 185,475.83

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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.