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Finding the Fourth Proportional to 3,178,295.06, 4,766,931.81 and 872,249.39

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Solution

The fourth proportional to 3,178,295.06, 4,766,931.81 and 872,249.39 is: 1,308,233.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,295.06 : 4,766,931.81 = 872,249.39 : x
  2. Step 2: Convert to fraction form
    3,178,295.06/4,766,931.81 = 872,249.39/x
  3. Step 3: Cross multiply
    3,178,295.06x = 4,766,931.81 × 872,249.39
  4. Step 4: Simplify right side
    3,178,295.06x = 4,157,953,339,609.44
  5. Step 5: Solve for x
    x = 4,157,953,339,609.44/3,178,295.06
  6. Step 6: Final answer
    x = 1,308,233.90

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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.