Home / 857,538.90-1,285,892.91-258,388.38

Finding the Fourth Proportional to 857,538.90, 1,285,892.91 and 258,388.38

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Solution

The fourth proportional to 857,538.90, 1,285,892.91 and 258,388.38 is: 387,457.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,538.90 : 1,285,892.91 = 258,388.38 : x
  2. Step 2: Convert to fraction form
    857,538.90/1,285,892.91 = 258,388.38/x
  3. Step 3: Cross multiply
    857,538.90x = 1,285,892.91 × 258,388.38
  4. Step 4: Simplify right side
    857,538.90x = 332,259,785,868.39
  5. Step 5: Solve for x
    x = 332,259,785,868.39/857,538.90
  6. Step 6: Final answer
    x = 387,457.39

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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.