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Finding the Fourth Proportional to 492,290.56, 679,380.96 and 277,439.68

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Solution

The fourth proportional to 492,290.56, 679,380.96 and 277,439.68 is: 382,878.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,290.56 : 679,380.96 = 277,439.68 : x
  2. Step 2: Convert to fraction form
    492,290.56/679,380.96 = 277,439.68/x
  3. Step 3: Cross multiply
    492,290.56x = 679,380.96 × 277,439.68
  4. Step 4: Simplify right side
    492,290.56x = 188,487,236,140.49
  5. Step 5: Solve for x
    x = 188,487,236,140.49/492,290.56
  6. Step 6: Final answer
    x = 382,878.02

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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.