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Finding the Fourth Proportional to 479,742, 662,102.28 and 278,538

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Solution

The fourth proportional to 479,742, 662,102.28 and 278,538 is: 384,416.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,742 : 662,102.28 = 278,538 : x
  2. Step 2: Convert to fraction form
    479,742/662,102.28 = 278,538/x
  3. Step 3: Cross multiply
    479,742x = 662,102.28 × 278,538
  4. Step 4: Simplify right side
    479,742x = 184,420,644,866.64
  5. Step 5: Solve for x
    x = 184,420,644,866.64/479,742
  6. Step 6: Final answer
    x = 384,416.30

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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.