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Finding the Fourth Proportional to 663,611.70, 915,744.69 and 377,092.02

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Solution

The fourth proportional to 663,611.70, 915,744.69 and 377,092.02 is: 520,364.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,611.70 : 915,744.69 = 377,092.02 : x
  2. Step 2: Convert to fraction form
    663,611.70/915,744.69 = 377,092.02/x
  3. Step 3: Cross multiply
    663,611.70x = 915,744.69 × 377,092.02
  4. Step 4: Simplify right side
    663,611.70x = 345,320,014,956.37
  5. Step 5: Solve for x
    x = 345,320,014,956.37/663,611.70
  6. Step 6: Final answer
    x = 520,364.57

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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.