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Finding the Fourth Proportional to 479,561.92, 661,817.49 and 275,678.84

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Solution

The fourth proportional to 479,561.92, 661,817.49 and 275,678.84 is: 380,449.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,561.92 : 661,817.49 = 275,678.84 : x
  2. Step 2: Convert to fraction form
    479,561.92/661,817.49 = 275,678.84/x
  3. Step 3: Cross multiply
    479,561.92x = 661,817.49 × 275,678.84
  4. Step 4: Simplify right side
    479,561.92x = 182,449,078,555.66
  5. Step 5: Solve for x
    x = 182,449,078,555.66/479,561.92
  6. Step 6: Final answer
    x = 380,449.47

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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.