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Finding the Fourth Proportional to 636,860.44, 878,867.38 and 350,374.38

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Solution

The fourth proportional to 636,860.44, 878,867.38 and 350,374.38 is: 483,516.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,860.44 : 878,867.38 = 350,374.38 : x
  2. Step 2: Convert to fraction form
    636,860.44/878,867.38 = 350,374.38/x
  3. Step 3: Cross multiply
    636,860.44x = 878,867.38 × 350,374.38
  4. Step 4: Simplify right side
    636,860.44x = 307,932,613,369.72
  5. Step 5: Solve for x
    x = 307,932,613,369.72/636,860.44
  6. Step 6: Final answer
    x = 483,516.63

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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.