Home / 861,155.96-1,290,895.99-411,760.26

Finding the Fourth Proportional to 861,155.96, 1,290,895.99 and 411,760.26

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Solution

The fourth proportional to 861,155.96, 1,290,895.99 and 411,760.26 is: 617,239.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,155.96 : 1,290,895.99 = 411,760.26 : x
  2. Step 2: Convert to fraction form
    861,155.96/1,290,895.99 = 411,760.26/x
  3. Step 3: Cross multiply
    861,155.96x = 1,290,895.99 × 411,760.26
  4. Step 4: Simplify right side
    861,155.96x = 531,539,667,445.96
  5. Step 5: Solve for x
    x = 531,539,667,445.96/861,155.96
  6. Step 6: Final answer
    x = 617,239.73

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1.5x scale

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.