Home / 385,986.60-578,634.30-252,930.60

Finding the Fourth Proportional to 385,986.60, 578,634.30 and 252,930.60

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Solution

The fourth proportional to 385,986.60, 578,634.30 and 252,930.60 is: 379,169.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,986.60 : 578,634.30 = 252,930.60 : x
  2. Step 2: Convert to fraction form
    385,986.60/578,634.30 = 252,930.60/x
  3. Step 3: Cross multiply
    385,986.60x = 578,634.30 × 252,930.60
  4. Step 4: Simplify right side
    385,986.60x = 146,354,320,679.58
  5. Step 5: Solve for x
    x = 146,354,320,679.58/385,986.60
  6. Step 6: Final answer
    x = 379,169.43

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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.