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Finding the Fourth Proportional to 674,798.40, 1,012,586.40 and 254,116.80

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Solution

The fourth proportional to 674,798.40, 1,012,586.40 and 254,116.80 is: 381,321.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,798.40 : 1,012,586.40 = 254,116.80 : x
  2. Step 2: Convert to fraction form
    674,798.40/1,012,586.40 = 254,116.80/x
  3. Step 3: Cross multiply
    674,798.40x = 1,012,586.40 × 254,116.80
  4. Step 4: Simplify right side
    674,798.40x = 257,315,215,691.52
  5. Step 5: Solve for x
    x = 257,315,215,691.52/674,798.40
  6. Step 6: Final answer
    x = 381,321.62

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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.