Home / 722,999.50-1,085,149.71-386,327.94

Finding the Fourth Proportional to 722,999.50, 1,085,149.71 and 386,327.94

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Solution

The fourth proportional to 722,999.50, 1,085,149.71 and 386,327.94 is: 579,839.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,999.50 : 1,085,149.71 = 386,327.94 : x
  2. Step 2: Convert to fraction form
    722,999.50/1,085,149.71 = 386,327.94/x
  3. Step 3: Cross multiply
    722,999.50x = 1,085,149.71 × 386,327.94
  4. Step 4: Simplify right side
    722,999.50x = 419,223,650,308.84
  5. Step 5: Solve for x
    x = 419,223,650,308.84/722,999.50
  6. Step 6: Final answer
    x = 579,839.47

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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.