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Finding the Fourth Proportional to 622,780.80, 934,122.60 and 243,627.90

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Solution

The fourth proportional to 622,780.80, 934,122.60 and 243,627.90 is: 365,422.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,780.80 : 934,122.60 = 243,627.90 : x
  2. Step 2: Convert to fraction form
    622,780.80/934,122.60 = 243,627.90/x
  3. Step 3: Cross multiply
    622,780.80x = 934,122.60 × 243,627.90
  4. Step 4: Simplify right side
    622,780.80x = 227,578,327,380.54
  5. Step 5: Solve for x
    x = 227,578,327,380.54/622,780.80
  6. Step 6: Final answer
    x = 365,422.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.