Home / 678,949.84-1,016,874.60-324,213.76

Finding the Fourth Proportional to 678,949.84, 1,016,874.60 and 324,213.76

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Solution

The fourth proportional to 678,949.84, 1,016,874.60 and 324,213.76 is: 485,580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,949.84 : 1,016,874.60 = 324,213.76 : x
  2. Step 2: Convert to fraction form
    678,949.84/1,016,874.60 = 324,213.76/x
  3. Step 3: Cross multiply
    678,949.84x = 1,016,874.60 × 324,213.76
  4. Step 4: Simplify right side
    678,949.84x = 329,684,737,514.50
  5. Step 5: Solve for x
    x = 329,684,737,514.50/678,949.84
  6. Step 6: Final answer
    x = 485,580.40

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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.