Home / 674,234.20-1,012,517.70-438,621.40

Finding the Fourth Proportional to 674,234.20, 1,012,517.70 and 438,621.40

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Solution

The fourth proportional to 674,234.20, 1,012,517.70 and 438,621.40 is: 658,690.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,234.20 : 1,012,517.70 = 438,621.40 : x
  2. Step 2: Convert to fraction form
    674,234.20/1,012,517.70 = 438,621.40/x
  3. Step 3: Cross multiply
    674,234.20x = 1,012,517.70 × 438,621.40
  4. Step 4: Simplify right side
    674,234.20x = 444,111,931,098.78
  5. Step 5: Solve for x
    x = 444,111,931,098.78/674,234.20
  6. Step 6: Final answer
    x = 658,690.90

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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.