Home / 664,917.43-997,396.31-215,625.91

Finding the Fourth Proportional to 664,917.43, 997,396.31 and 215,625.91

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Solution

The fourth proportional to 664,917.43, 997,396.31 and 215,625.91 is: 323,445.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,917.43 : 997,396.31 = 215,625.91 : x
  2. Step 2: Convert to fraction form
    664,917.43/997,396.31 = 215,625.91/x
  3. Step 3: Cross multiply
    664,917.43x = 997,396.31 × 215,625.91
  4. Step 4: Simplify right side
    664,917.43x = 215,064,486,974.39
  5. Step 5: Solve for x
    x = 215,064,486,974.39/664,917.43
  6. Step 6: Final answer
    x = 323,445.40

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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.