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Finding the Fourth Proportional to 481,878.60, 722,817.90 and 257,929.80

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Solution

The fourth proportional to 481,878.60, 722,817.90 and 257,929.80 is: 386,894.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,878.60 : 722,817.90 = 257,929.80 : x
  2. Step 2: Convert to fraction form
    481,878.60/722,817.90 = 257,929.80/x
  3. Step 3: Cross multiply
    481,878.60x = 722,817.90 × 257,929.80
  4. Step 4: Simplify right side
    481,878.60x = 186,436,276,383.42
  5. Step 5: Solve for x
    x = 186,436,276,383.42/481,878.60
  6. Step 6: Final answer
    x = 386,894.70

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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.