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Finding the Fourth Proportional to 663,930.52, 916,219.80 and 377,450.68

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Solution

The fourth proportional to 663,930.52, 916,219.80 and 377,450.68 is: 520,879.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,930.52 : 916,219.80 = 377,450.68 : x
  2. Step 2: Convert to fraction form
    663,930.52/916,219.80 = 377,450.68/x
  3. Step 3: Cross multiply
    663,930.52x = 916,219.80 × 377,450.68
  4. Step 4: Simplify right side
    663,930.52x = 345,827,786,539.46
  5. Step 5: Solve for x
    x = 345,827,786,539.46/663,930.52
  6. Step 6: Final answer
    x = 520,879.48

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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.