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Finding the Fourth Proportional to 628,022.16, 866,652.04 and 356,114.88

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Solution

The fourth proportional to 628,022.16, 866,652.04 and 356,114.88 is: 491,428.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,022.16 : 866,652.04 = 356,114.88 : x
  2. Step 2: Convert to fraction form
    628,022.16/866,652.04 = 356,114.88/x
  3. Step 3: Cross multiply
    628,022.16x = 866,652.04 × 356,114.88
  4. Step 4: Simplify right side
    628,022.16x = 308,627,687,226.36
  5. Step 5: Solve for x
    x = 308,627,687,226.36/628,022.16
  6. Step 6: Final answer
    x = 491,428.02

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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.