Home / 769,407.66-1,062,078.89-688,692.78

Finding the Fourth Proportional to 769,407.66, 1,062,078.89 and 688,692.78

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Solution

The fourth proportional to 769,407.66, 1,062,078.89 and 688,692.78 is: 950,661.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,407.66 : 1,062,078.89 = 688,692.78 : x
  2. Step 2: Convert to fraction form
    769,407.66/1,062,078.89 = 688,692.78/x
  3. Step 3: Cross multiply
    769,407.66x = 1,062,078.89 × 688,692.78
  4. Step 4: Simplify right side
    769,407.66x = 731,446,059,889.95
  5. Step 5: Solve for x
    x = 731,446,059,889.95/769,407.66
  6. Step 6: Final answer
    x = 950,661.27

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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.