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Finding the Fourth Proportional to 665,436.56, 918,027.96 and 483,750.32

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Solution

The fourth proportional to 665,436.56, 918,027.96 and 483,750.32 is: 667,375.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,436.56 : 918,027.96 = 483,750.32 : x
  2. Step 2: Convert to fraction form
    665,436.56/918,027.96 = 483,750.32/x
  3. Step 3: Cross multiply
    665,436.56x = 918,027.96 × 483,750.32
  4. Step 4: Simplify right side
    665,436.56x = 444,096,319,418.95
  5. Step 5: Solve for x
    x = 444,096,319,418.95/665,436.56
  6. Step 6: Final answer
    x = 667,375.89

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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.