Home / 987,405-1,481,112.36-239,451

Finding the Fourth Proportional to 987,405, 1,481,112.36 and 239,451

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Solution

The fourth proportional to 987,405, 1,481,112.36 and 239,451 is: 359,177.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,405 : 1,481,112.36 = 239,451 : x
  2. Step 2: Convert to fraction form
    987,405/1,481,112.36 = 239,451/x
  3. Step 3: Cross multiply
    987,405x = 1,481,112.36 × 239,451
  4. Step 4: Simplify right side
    987,405x = 354,653,835,714.36
  5. Step 5: Solve for x
    x = 354,653,835,714.36/987,405
  6. Step 6: Final answer
    x = 359,177.68

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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.