Home / 720,149.88-1,079,522.75-287,738.43

Finding the Fourth Proportional to 720,149.88, 1,079,522.75 and 287,738.43

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Solution

The fourth proportional to 720,149.88, 1,079,522.75 and 287,738.43 is: 431,327.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,149.88 : 1,079,522.75 = 287,738.43 : x
  2. Step 2: Convert to fraction form
    720,149.88/1,079,522.75 = 287,738.43/x
  3. Step 3: Cross multiply
    720,149.88x = 1,079,522.75 × 287,738.43
  4. Step 4: Simplify right side
    720,149.88x = 310,620,179,795.59
  5. Step 5: Solve for x
    x = 310,620,179,795.59/720,149.88
  6. Step 6: Final answer
    x = 431,327.13

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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.