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Finding the Fourth Proportional to 386,494.80, 579,742.20 and 386,494.80

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Solution

The fourth proportional to 386,494.80, 579,742.20 and 386,494.80 is: 579,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,494.80 : 579,742.20 = 386,494.80 : x
  2. Step 2: Convert to fraction form
    386,494.80/579,742.20 = 386,494.80/x
  3. Step 3: Cross multiply
    386,494.80x = 579,742.20 × 386,494.80
  4. Step 4: Simplify right side
    386,494.80x = 224,067,345,640.56
  5. Step 5: Solve for x
    x = 224,067,345,640.56/386,494.80
  6. Step 6: Final answer
    x = 579,742.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.