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Finding the Fourth Proportional to 663,652.25, 915,840.32 and 377,164.97

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Solution

The fourth proportional to 663,652.25, 915,840.32 and 377,164.97 is: 520,487.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,652.25 : 915,840.32 = 377,164.97 : x
  2. Step 2: Convert to fraction form
    663,652.25/915,840.32 = 377,164.97/x
  3. Step 3: Cross multiply
    663,652.25x = 915,840.32 × 377,164.97
  4. Step 4: Simplify right side
    663,652.25x = 345,422,880,352.56
  5. Step 5: Solve for x
    x = 345,422,880,352.56/663,652.25
  6. Step 6: Final answer
    x = 520,487.77

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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.