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Finding the Fourth Proportional to 479,718, 662,069.16 and 278,514

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Solution

The fourth proportional to 479,718, 662,069.16 and 278,514 is: 384,383.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,718 : 662,069.16 = 278,514 : x
  2. Step 2: Convert to fraction form
    479,718/662,069.16 = 278,514/x
  3. Step 3: Cross multiply
    479,718x = 662,069.16 × 278,514
  4. Step 4: Simplify right side
    479,718x = 184,395,530,028.24
  5. Step 5: Solve for x
    x = 184,395,530,028.24/479,718
  6. Step 6: Final answer
    x = 384,383.18

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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.