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Finding the Fourth Proportional to 481,803.60, 722,705.40 and 257,854.80

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Solution

The fourth proportional to 481,803.60, 722,705.40 and 257,854.80 is: 386,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,803.60 : 722,705.40 = 257,854.80 : x
  2. Step 2: Convert to fraction form
    481,803.60/722,705.40 = 257,854.80/x
  3. Step 3: Cross multiply
    481,803.60x = 722,705.40 × 257,854.80
  4. Step 4: Simplify right side
    481,803.60x = 186,353,056,375.92
  5. Step 5: Solve for x
    x = 186,353,056,375.92/481,803.60
  6. Step 6: Final answer
    x = 386,782.20

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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.