Home / 678,604.60-1,017,906.90-323,788.60

Finding the Fourth Proportional to 678,604.60, 1,017,906.90 and 323,788.60

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Solution

The fourth proportional to 678,604.60, 1,017,906.90 and 323,788.60 is: 485,682.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,604.60 : 1,017,906.90 = 323,788.60 : x
  2. Step 2: Convert to fraction form
    678,604.60/1,017,906.90 = 323,788.60/x
  3. Step 3: Cross multiply
    678,604.60x = 1,017,906.90 × 323,788.60
  4. Step 4: Simplify right side
    678,604.60x = 329,586,650,081.34
  5. Step 5: Solve for x
    x = 329,586,650,081.34/678,604.60
  6. Step 6: Final answer
    x = 485,682.90

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Similar ratio
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1.5x scale

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.