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Finding the Fourth Proportional to 494,780, 682,797.72 and 268,425.50

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Solution

The fourth proportional to 494,780, 682,797.72 and 268,425.50 is: 370,427.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,780 : 682,797.72 = 268,425.50 : x
  2. Step 2: Convert to fraction form
    494,780/682,797.72 = 268,425.50/x
  3. Step 3: Cross multiply
    494,780x = 682,797.72 × 268,425.50
  4. Step 4: Simplify right side
    494,780x = 183,280,319,389.86
  5. Step 5: Solve for x
    x = 183,280,319,389.86/494,780
  6. Step 6: Final answer
    x = 370,427.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.