Home / 1,287,995.15-1,777,441.25-707,243.38

Finding the Fourth Proportional to 1,287,995.15, 1,777,441.25 and 707,243.38

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Solution

The fourth proportional to 1,287,995.15, 1,777,441.25 and 707,243.38 is: 976,000.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,995.15 : 1,777,441.25 = 707,243.38 : x
  2. Step 2: Convert to fraction form
    1,287,995.15/1,777,441.25 = 707,243.38/x
  3. Step 3: Cross multiply
    1,287,995.15x = 1,777,441.25 × 707,243.38
  4. Step 4: Simplify right side
    1,287,995.15x = 1,257,083,557,401.43
  5. Step 5: Solve for x
    x = 1,257,083,557,401.43/1,287,995.15
  6. Step 6: Final answer
    x = 976,000.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.