Home / 1,320,108.80-1,980,163.20-863,463.20

Finding the Fourth Proportional to 1,320,108.80, 1,980,163.20 and 863,463.20

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Solution

The fourth proportional to 1,320,108.80, 1,980,163.20 and 863,463.20 is: 1,295,194.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,108.80 : 1,980,163.20 = 863,463.20 : x
  2. Step 2: Convert to fraction form
    1,320,108.80/1,980,163.20 = 863,463.20/x
  3. Step 3: Cross multiply
    1,320,108.80x = 1,980,163.20 × 863,463.20
  4. Step 4: Simplify right side
    1,320,108.80x = 1,709,798,053,194.24
  5. Step 5: Solve for x
    x = 1,709,798,053,194.24/1,320,108.80
  6. Step 6: Final answer
    x = 1,295,194.80

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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.