Home / 1,287,524.20-1,929,633.90-718,904.20

Finding the Fourth Proportional to 1,287,524.20, 1,929,633.90 and 718,904.20

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Solution

The fourth proportional to 1,287,524.20, 1,929,633.90 and 718,904.20 is: 1,077,433.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,524.20 : 1,929,633.90 = 718,904.20 : x
  2. Step 2: Convert to fraction form
    1,287,524.20/1,929,633.90 = 718,904.20/x
  3. Step 3: Cross multiply
    1,287,524.20x = 1,929,633.90 × 718,904.20
  4. Step 4: Simplify right side
    1,287,524.20x = 1,387,221,915,172.38
  5. Step 5: Solve for x
    x = 1,387,221,915,172.38/1,287,524.20
  6. Step 6: Final answer
    x = 1,077,433.66

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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.