Home / 828,008.80-1,242,013.20-688,040.80

Finding the Fourth Proportional to 828,008.80, 1,242,013.20 and 688,040.80

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Solution

The fourth proportional to 828,008.80, 1,242,013.20 and 688,040.80 is: 1,032,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,008.80 : 1,242,013.20 = 688,040.80 : x
  2. Step 2: Convert to fraction form
    828,008.80/1,242,013.20 = 688,040.80/x
  3. Step 3: Cross multiply
    828,008.80x = 1,242,013.20 × 688,040.80
  4. Step 4: Simplify right side
    828,008.80x = 854,555,755,738.56
  5. Step 5: Solve for x
    x = 854,555,755,738.56/828,008.80
  6. Step 6: Final answer
    x = 1,032,061.20

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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.