Home / 412,031.31-616,939.58-261,456.36

Finding the Fourth Proportional to 412,031.31, 616,939.58 and 261,456.36

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Solution

The fourth proportional to 412,031.31, 616,939.58 and 261,456.36 is: 391,481.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,031.31 : 616,939.58 = 261,456.36 : x
  2. Step 2: Convert to fraction form
    412,031.31/616,939.58 = 261,456.36/x
  3. Step 3: Cross multiply
    412,031.31x = 616,939.58 × 261,456.36
  4. Step 4: Simplify right side
    412,031.31x = 161,302,775,619.45
  5. Step 5: Solve for x
    x = 161,302,775,619.45/412,031.31
  6. Step 6: Final answer
    x = 391,481.84

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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.