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Finding the Fourth Proportional to 493,071.60, 680,441.52 and 275,290.12

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Solution

The fourth proportional to 493,071.60, 680,441.52 and 275,290.12 is: 379,901.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,071.60 : 680,441.52 = 275,290.12 : x
  2. Step 2: Convert to fraction form
    493,071.60/680,441.52 = 275,290.12/x
  3. Step 3: Cross multiply
    493,071.60x = 680,441.52 × 275,290.12
  4. Step 4: Simplify right side
    493,071.60x = 187,318,827,693.78
  5. Step 5: Solve for x
    x = 187,318,827,693.78/493,071.60
  6. Step 6: Final answer
    x = 379,901.88

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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.