Home / 717,489.24-990,135.03-395,199.33

Finding the Fourth Proportional to 717,489.24, 990,135.03 and 395,199.33

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Solution

The fourth proportional to 717,489.24, 990,135.03 and 395,199.33 is: 545,375.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,489.24 : 990,135.03 = 395,199.33 : x
  2. Step 2: Convert to fraction form
    717,489.24/990,135.03 = 395,199.33/x
  3. Step 3: Cross multiply
    717,489.24x = 990,135.03 × 395,199.33
  4. Step 4: Simplify right side
    717,489.24x = 391,300,695,514.86
  5. Step 5: Solve for x
    x = 391,300,695,514.86/717,489.24
  6. Step 6: Final answer
    x = 545,375.01

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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.