Home / 717,531.91-990,189.43-395,234.53

Finding the Fourth Proportional to 717,531.91, 990,189.43 and 395,234.53

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Solution

The fourth proportional to 717,531.91, 990,189.43 and 395,234.53 is: 545,421.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,531.91 : 990,189.43 = 395,234.53 : x
  2. Step 2: Convert to fraction form
    717,531.91/990,189.43 = 395,234.53/x
  3. Step 3: Cross multiply
    717,531.91x = 990,189.43 × 395,234.53
  4. Step 4: Simplify right side
    717,531.91x = 391,357,053,977.02
  5. Step 5: Solve for x
    x = 391,357,053,977.02/717,531.91
  6. Step 6: Final answer
    x = 545,421.11

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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.