Home / 769,748.40-1,151,512.20-665,722.80

Finding the Fourth Proportional to 769,748.40, 1,151,512.20 and 665,722.80

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Solution

The fourth proportional to 769,748.40, 1,151,512.20 and 665,722.80 is: 995,894.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,748.40 : 1,151,512.20 = 665,722.80 : x
  2. Step 2: Convert to fraction form
    769,748.40/1,151,512.20 = 665,722.80/x
  3. Step 3: Cross multiply
    769,748.40x = 1,151,512.20 × 665,722.80
  4. Step 4: Simplify right side
    769,748.40x = 766,587,926,018.16
  5. Step 5: Solve for x
    x = 766,587,926,018.16/769,748.40
  6. Step 6: Final answer
    x = 995,894.15

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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.