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Finding the Fourth Proportional to 486,072.67, 670,672.90 and 282,005.39

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Solution

The fourth proportional to 486,072.67, 670,672.90 and 282,005.39 is: 389,105.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,072.67 : 670,672.90 = 282,005.39 : x
  2. Step 2: Convert to fraction form
    486,072.67/670,672.90 = 282,005.39/x
  3. Step 3: Cross multiply
    486,072.67x = 670,672.90 × 282,005.39
  4. Step 4: Simplify right side
    486,072.67x = 189,133,372,726.93
  5. Step 5: Solve for x
    x = 189,133,372,726.93/486,072.67
  6. Step 6: Final answer
    x = 389,105.14

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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.