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Finding the Fourth Proportional to 628,267.88, 866,944.05 and 356,248.82

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Solution

The fourth proportional to 628,267.88, 866,944.05 and 356,248.82 is: 491,586.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,267.88 : 866,944.05 = 356,248.82 : x
  2. Step 2: Convert to fraction form
    628,267.88/866,944.05 = 356,248.82/x
  3. Step 3: Cross multiply
    628,267.88x = 866,944.05 × 356,248.82
  4. Step 4: Simplify right side
    628,267.88x = 308,847,790,483.80
  5. Step 5: Solve for x
    x = 308,847,790,483.80/628,267.88
  6. Step 6: Final answer
    x = 491,586.16

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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.