Home / 762,761.20-1,143,623.40-289,375.60

Finding the Fourth Proportional to 762,761.20, 1,143,623.40 and 289,375.60

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Solution

The fourth proportional to 762,761.20, 1,143,623.40 and 289,375.60 is: 433,866.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,761.20 : 1,143,623.40 = 289,375.60 : x
  2. Step 2: Convert to fraction form
    762,761.20/1,143,623.40 = 289,375.60/x
  3. Step 3: Cross multiply
    762,761.20x = 1,143,623.40 × 289,375.60
  4. Step 4: Simplify right side
    762,761.20x = 330,936,707,549.04
  5. Step 5: Solve for x
    x = 330,936,707,549.04/762,761.20
  6. Step 6: Final answer
    x = 433,866.73

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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.