Home / 861,020.33-1,291,551.75-411,788.66

Finding the Fourth Proportional to 861,020.33, 1,291,551.75 and 411,788.66

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Solution

The fourth proportional to 861,020.33, 1,291,551.75 and 411,788.66 is: 617,693.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,020.33 : 1,291,551.75 = 411,788.66 : x
  2. Step 2: Convert to fraction form
    861,020.33/1,291,551.75 = 411,788.66/x
  3. Step 3: Cross multiply
    861,020.33x = 1,291,551.75 × 411,788.66
  4. Step 4: Simplify right side
    861,020.33x = 531,846,357,995.40
  5. Step 5: Solve for x
    x = 531,846,357,995.40/861,020.33
  6. Step 6: Final answer
    x = 617,693.15

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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.