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Finding the Fourth Proportional to 479,498.60, 661,672.80 and 275,549.92

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Solution

The fourth proportional to 479,498.60, 661,672.80 and 275,549.92 is: 380,238.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,498.60 : 661,672.80 = 275,549.92 : x
  2. Step 2: Convert to fraction form
    479,498.60/661,672.80 = 275,549.92/x
  3. Step 3: Cross multiply
    479,498.60x = 661,672.80 × 275,549.92
  4. Step 4: Simplify right side
    479,498.60x = 182,323,885,451.99
  5. Step 5: Solve for x
    x = 182,323,885,451.99/479,498.60
  6. Step 6: Final answer
    x = 380,238.62

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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.