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Finding the Fourth Proportional to 768,862.68, 1,061,529.74 and 688,150.24

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Solution

The fourth proportional to 768,862.68, 1,061,529.74 and 688,150.24 is: 950,094.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,862.68 : 1,061,529.74 = 688,150.24 : x
  2. Step 2: Convert to fraction form
    768,862.68/1,061,529.74 = 688,150.24/x
  3. Step 3: Cross multiply
    768,862.68x = 1,061,529.74 × 688,150.24
  4. Step 4: Simplify right side
    768,862.68x = 730,491,945,348.14
  5. Step 5: Solve for x
    x = 730,491,945,348.14/768,862.68
  6. Step 6: Final answer
    x = 950,094.16

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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.