Home / 768,861.68-1,061,528.36-688,149.24

Finding the Fourth Proportional to 768,861.68, 1,061,528.36 and 688,149.24

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Solution

The fourth proportional to 768,861.68, 1,061,528.36 and 688,149.24 is: 950,092.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,861.68 : 1,061,528.36 = 688,149.24 : x
  2. Step 2: Convert to fraction form
    768,861.68/1,061,528.36 = 688,149.24/x
  3. Step 3: Cross multiply
    768,861.68x = 1,061,528.36 × 688,149.24
  4. Step 4: Simplify right side
    768,861.68x = 730,489,934,172.45
  5. Step 5: Solve for x
    x = 730,489,934,172.45/768,861.68
  6. Step 6: Final answer
    x = 950,092.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.