Home / 861,971.22-1,189,520.28-499,605.27

Finding the Fourth Proportional to 861,971.22, 1,189,520.28 and 499,605.27

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Solution

The fourth proportional to 861,971.22, 1,189,520.28 and 499,605.27 is: 689,455.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,971.22 : 1,189,520.28 = 499,605.27 : x
  2. Step 2: Convert to fraction form
    861,971.22/1,189,520.28 = 499,605.27/x
  3. Step 3: Cross multiply
    861,971.22x = 1,189,520.28 × 499,605.27
  4. Step 4: Simplify right side
    861,971.22x = 594,290,600,659.88
  5. Step 5: Solve for x
    x = 594,290,600,659.88/861,971.22
  6. Step 6: Final answer
    x = 689,455.27

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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.