Home / 717,538.42-990,198.38-395,241.04

Finding the Fourth Proportional to 717,538.42, 990,198.38 and 395,241.04

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Solution

The fourth proportional to 717,538.42, 990,198.38 and 395,241.04 is: 545,430.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,538.42 : 990,198.38 = 395,241.04 : x
  2. Step 2: Convert to fraction form
    717,538.42/990,198.38 = 395,241.04/x
  3. Step 3: Cross multiply
    717,538.42x = 990,198.38 × 395,241.04
  4. Step 4: Simplify right side
    717,538.42x = 391,367,037,517.52
  5. Step 5: Solve for x
    x = 391,367,037,517.52/717,538.42
  6. Step 6: Final answer
    x = 545,430.08

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1.5x scale

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.