Home / 642,419.76-964,512.36-327,088.56

Finding the Fourth Proportional to 642,419.76, 964,512.36 and 327,088.56

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Solution

The fourth proportional to 642,419.76, 964,512.36 and 327,088.56 is: 491,082.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,419.76 : 964,512.36 = 327,088.56 : x
  2. Step 2: Convert to fraction form
    642,419.76/964,512.36 = 327,088.56/x
  3. Step 3: Cross multiply
    642,419.76x = 964,512.36 × 327,088.56
  4. Step 4: Simplify right side
    642,419.76x = 315,480,958,934.60
  5. Step 5: Solve for x
    x = 315,480,958,934.60/642,419.76
  6. Step 6: Final answer
    x = 491,082.28

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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.