Home / 1,137,969.20-1,707,208.06-428,003.40

Finding the Fourth Proportional to 1,137,969.20, 1,707,208.06 and 428,003.40

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Solution

The fourth proportional to 1,137,969.20, 1,707,208.06 and 428,003.40 is: 642,100.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,969.20 : 1,707,208.06 = 428,003.40 : x
  2. Step 2: Convert to fraction form
    1,137,969.20/1,707,208.06 = 428,003.40/x
  3. Step 3: Cross multiply
    1,137,969.20x = 1,707,208.06 × 428,003.40
  4. Step 4: Simplify right side
    1,137,969.20x = 730,690,854,187.40
  5. Step 5: Solve for x
    x = 730,690,854,187.40/1,137,969.20
  6. Step 6: Final answer
    x = 642,100.73

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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.