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Finding the Fourth Proportional to 632,415.60, 949,060.80 and 455,049.90

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Solution

The fourth proportional to 632,415.60, 949,060.80 and 455,049.90 is: 682,889.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,415.60 : 949,060.80 = 455,049.90 : x
  2. Step 2: Convert to fraction form
    632,415.60/949,060.80 = 455,049.90/x
  3. Step 3: Cross multiply
    632,415.60x = 949,060.80 × 455,049.90
  4. Step 4: Simplify right side
    632,415.60x = 431,870,022,133.92
  5. Step 5: Solve for x
    x = 431,870,022,133.92/632,415.60
  6. Step 6: Final answer
    x = 682,889.58

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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.