Home / 770,782.80-1,156,116.60-321,387.60

Finding the Fourth Proportional to 770,782.80, 1,156,116.60 and 321,387.60

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Solution

The fourth proportional to 770,782.80, 1,156,116.60 and 321,387.60 is: 482,057.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,782.80 : 1,156,116.60 = 321,387.60 : x
  2. Step 2: Convert to fraction form
    770,782.80/1,156,116.60 = 321,387.60/x
  3. Step 3: Cross multiply
    770,782.80x = 1,156,116.60 × 321,387.60
  4. Step 4: Simplify right side
    770,782.80x = 371,561,539,394.16
  5. Step 5: Solve for x
    x = 371,561,539,394.16/770,782.80
  6. Step 6: Final answer
    x = 482,057.38

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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.