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Finding the Fourth Proportional to 628,021.32, 866,650.92 and 356,114.04

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Solution

The fourth proportional to 628,021.32, 866,650.92 and 356,114.04 is: 491,426.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,021.32 : 866,650.92 = 356,114.04 : x
  2. Step 2: Convert to fraction form
    628,021.32/866,650.92 = 356,114.04/x
  3. Step 3: Cross multiply
    628,021.32x = 866,650.92 × 356,114.04
  4. Step 4: Simplify right side
    628,021.32x = 308,626,560,390.92
  5. Step 5: Solve for x
    x = 308,626,560,390.92/628,021.32
  6. Step 6: Final answer
    x = 491,426.88

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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.