Home / 782,087.74-1,173,575.40-422,253.80

Finding the Fourth Proportional to 782,087.74, 1,173,575.40 and 422,253.80

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Solution

The fourth proportional to 782,087.74, 1,173,575.40 and 422,253.80 is: 633,620.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,087.74 : 1,173,575.40 = 422,253.80 : x
  2. Step 2: Convert to fraction form
    782,087.74/1,173,575.40 = 422,253.80/x
  3. Step 3: Cross multiply
    782,087.74x = 1,173,575.40 × 422,253.80
  4. Step 4: Simplify right side
    782,087.74x = 495,546,670,125.25
  5. Step 5: Solve for x
    x = 495,546,670,125.25/782,087.74
  6. Step 6: Final answer
    x = 633,620.30

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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.