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Finding the Fourth Proportional to 454,638.80, 681,958.20 and 277,491.80

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Solution

The fourth proportional to 454,638.80, 681,958.20 and 277,491.80 is: 416,237.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,638.80 : 681,958.20 = 277,491.80 : x
  2. Step 2: Convert to fraction form
    454,638.80/681,958.20 = 277,491.80/x
  3. Step 3: Cross multiply
    454,638.80x = 681,958.20 × 277,491.80
  4. Step 4: Simplify right side
    454,638.80x = 189,237,808,442.76
  5. Step 5: Solve for x
    x = 189,237,808,442.76/454,638.80
  6. Step 6: Final answer
    x = 416,237.70

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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.