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Finding the Fourth Proportional to 614,780.40, 922,170.60 and 349,059.90

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Solution

The fourth proportional to 614,780.40, 922,170.60 and 349,059.90 is: 523,589.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,780.40 : 922,170.60 = 349,059.90 : x
  2. Step 2: Convert to fraction form
    614,780.40/922,170.60 = 349,059.90/x
  3. Step 3: Cross multiply
    614,780.40x = 922,170.60 × 349,059.90
  4. Step 4: Simplify right side
    614,780.40x = 321,892,777,418.94
  5. Step 5: Solve for x
    x = 321,892,777,418.94/614,780.40
  6. Step 6: Final answer
    x = 523,589.85

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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.