Home / 1,288,168.96-1,777,728.74-715,209.24

Finding the Fourth Proportional to 1,288,168.96, 1,777,728.74 and 715,209.24

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Solution

The fourth proportional to 1,288,168.96, 1,777,728.74 and 715,209.24 is: 987,019.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,168.96 : 1,777,728.74 = 715,209.24 : x
  2. Step 2: Convert to fraction form
    1,288,168.96/1,777,728.74 = 715,209.24/x
  3. Step 3: Cross multiply
    1,288,168.96x = 1,777,728.74 × 715,209.24
  4. Step 4: Simplify right side
    1,288,168.96x = 1,271,448,021,061.56
  5. Step 5: Solve for x
    x = 1,271,448,021,061.56/1,288,168.96
  6. Step 6: Final answer
    x = 987,019.61

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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.