Home / 762,781.55-1,143,729.25-289,208.57

Finding the Fourth Proportional to 762,781.55, 1,143,729.25 and 289,208.57

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Solution

The fourth proportional to 762,781.55, 1,143,729.25 and 289,208.57 is: 433,644.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,781.55 : 1,143,729.25 = 289,208.57 : x
  2. Step 2: Convert to fraction form
    762,781.55/1,143,729.25 = 289,208.57/x
  3. Step 3: Cross multiply
    762,781.55x = 1,143,729.25 × 289,208.57
  4. Step 4: Simplify right side
    762,781.55x = 330,776,294,418.01
  5. Step 5: Solve for x
    x = 330,776,294,418.01/762,781.55
  6. Step 6: Final answer
    x = 433,644.86

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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.