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Finding the Fourth Proportional to 991,751.80, 1,489,182.90 and 571,847.80

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Solution

The fourth proportional to 991,751.80, 1,489,182.90 and 571,847.80 is: 858,668.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,751.80 : 1,489,182.90 = 571,847.80 : x
  2. Step 2: Convert to fraction form
    991,751.80/1,489,182.90 = 571,847.80/x
  3. Step 3: Cross multiply
    991,751.80x = 1,489,182.90 × 571,847.80
  4. Step 4: Simplify right side
    991,751.80x = 851,585,965,162.62
  5. Step 5: Solve for x
    x = 851,585,965,162.62/991,751.80
  6. Step 6: Final answer
    x = 858,668.43

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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.