Home / 664,915.32-997,513.11-215,601.18

Finding the Fourth Proportional to 664,915.32, 997,513.11 and 215,601.18

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Solution

The fourth proportional to 664,915.32, 997,513.11 and 215,601.18 is: 323,447.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,915.32 : 997,513.11 = 215,601.18 : x
  2. Step 2: Convert to fraction form
    664,915.32/997,513.11 = 215,601.18/x
  3. Step 3: Cross multiply
    664,915.32x = 997,513.11 × 215,601.18
  4. Step 4: Simplify right side
    664,915.32x = 215,065,003,581.47
  5. Step 5: Solve for x
    x = 215,065,003,581.47/664,915.32
  6. Step 6: Final answer
    x = 323,447.21

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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.