Home / 1,080,312.80-1,620,469.20-679,654.40

Finding the Fourth Proportional to 1,080,312.80, 1,620,469.20 and 679,654.40

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Solution

The fourth proportional to 1,080,312.80, 1,620,469.20 and 679,654.40 is: 1,019,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,312.80 : 1,620,469.20 = 679,654.40 : x
  2. Step 2: Convert to fraction form
    1,080,312.80/1,620,469.20 = 679,654.40/x
  3. Step 3: Cross multiply
    1,080,312.80x = 1,620,469.20 × 679,654.40
  4. Step 4: Simplify right side
    1,080,312.80x = 1,101,359,021,844.48
  5. Step 5: Solve for x
    x = 1,101,359,021,844.48/1,080,312.80
  6. Step 6: Final answer
    x = 1,019,481.60

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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.