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Finding the Fourth Proportional to 663,958.58, 916,201.32 and 377,422.70

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Solution

The fourth proportional to 663,958.58, 916,201.32 and 377,422.70 is: 520,808.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,958.58 : 916,201.32 = 377,422.70 : x
  2. Step 2: Convert to fraction form
    663,958.58/916,201.32 = 377,422.70/x
  3. Step 3: Cross multiply
    663,958.58x = 916,201.32 × 377,422.70
  4. Step 4: Simplify right side
    663,958.58x = 345,795,175,937.96
  5. Step 5: Solve for x
    x = 345,795,175,937.96/663,958.58
  6. Step 6: Final answer
    x = 520,808.36

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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.