Home / 1,242,028.80-1,863,043.20-763,731.90

Finding the Fourth Proportional to 1,242,028.80, 1,863,043.20 and 763,731.90

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Solution

The fourth proportional to 1,242,028.80, 1,863,043.20 and 763,731.90 is: 1,145,597.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,028.80 : 1,863,043.20 = 763,731.90 : x
  2. Step 2: Convert to fraction form
    1,242,028.80/1,863,043.20 = 763,731.90/x
  3. Step 3: Cross multiply
    1,242,028.80x = 1,863,043.20 × 763,731.90
  4. Step 4: Simplify right side
    1,242,028.80x = 1,422,865,522,918.08
  5. Step 5: Solve for x
    x = 1,422,865,522,918.08/1,242,028.80
  6. Step 6: Final answer
    x = 1,145,597.85

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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.