Home / 766,394.91-1,147,629.53-639,720.23

Finding the Fourth Proportional to 766,394.91, 1,147,629.53 and 639,720.23

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Solution

The fourth proportional to 766,394.91, 1,147,629.53 and 639,720.23 is: 957,941.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,394.91 : 1,147,629.53 = 639,720.23 : x
  2. Step 2: Convert to fraction form
    766,394.91/1,147,629.53 = 639,720.23/x
  3. Step 3: Cross multiply
    766,394.91x = 1,147,629.53 × 639,720.23
  4. Step 4: Simplify right side
    766,394.91x = 734,161,822,747.55
  5. Step 5: Solve for x
    x = 734,161,822,747.55/766,394.91
  6. Step 6: Final answer
    x = 957,941.93

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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.