Home / 991,729.80-1,489,149.90-571,825.80

Finding the Fourth Proportional to 991,729.80, 1,489,149.90 and 571,825.80

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Solution

The fourth proportional to 991,729.80, 1,489,149.90 and 571,825.80 is: 858,635.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,729.80 : 1,489,149.90 = 571,825.80 : x
  2. Step 2: Convert to fraction form
    991,729.80/1,489,149.90 = 571,825.80/x
  3. Step 3: Cross multiply
    991,729.80x = 1,489,149.90 × 571,825.80
  4. Step 4: Simplify right side
    991,729.80x = 851,534,332,887.42
  5. Step 5: Solve for x
    x = 851,534,332,887.42/991,729.80
  6. Step 6: Final answer
    x = 858,635.42

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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.