Home / 861,693.84-1,189,114.27-479,720.66

Finding the Fourth Proportional to 861,693.84, 1,189,114.27 and 479,720.66

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Solution

The fourth proportional to 861,693.84, 1,189,114.27 and 479,720.66 is: 662,001.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,693.84 : 1,189,114.27 = 479,720.66 : x
  2. Step 2: Convert to fraction form
    861,693.84/1,189,114.27 = 479,720.66/x
  3. Step 3: Cross multiply
    861,693.84x = 1,189,114.27 × 479,720.66
  4. Step 4: Simplify right side
    861,693.84x = 570,442,675,274.95
  5. Step 5: Solve for x
    x = 570,442,675,274.95/861,693.84
  6. Step 6: Final answer
    x = 662,001.57

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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.