Home / 1,087,121.20-1,629,126.60-754,308.40

Finding the Fourth Proportional to 1,087,121.20, 1,629,126.60 and 754,308.40

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Solution

The fourth proportional to 1,087,121.20, 1,629,126.60 and 754,308.40 is: 1,130,383.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,121.20 : 1,629,126.60 = 754,308.40 : x
  2. Step 2: Convert to fraction form
    1,087,121.20/1,629,126.60 = 754,308.40/x
  3. Step 3: Cross multiply
    1,087,121.20x = 1,629,126.60 × 754,308.40
  4. Step 4: Simplify right side
    1,087,121.20x = 1,228,863,879,043.44
  5. Step 5: Solve for x
    x = 1,228,863,879,043.44/1,087,121.20
  6. Step 6: Final answer
    x = 1,130,383.51

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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.