Home / 857,485.68-1,285,812.96-258,335.04

Finding the Fourth Proportional to 857,485.68, 1,285,812.96 and 258,335.04

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Solution

The fourth proportional to 857,485.68, 1,285,812.96 and 258,335.04 is: 387,377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,485.68 : 1,285,812.96 = 258,335.04 : x
  2. Step 2: Convert to fraction form
    857,485.68/1,285,812.96 = 258,335.04/x
  3. Step 3: Cross multiply
    857,485.68x = 1,285,812.96 × 258,335.04
  4. Step 4: Simplify right side
    857,485.68x = 332,170,542,454.12
  5. Step 5: Solve for x
    x = 332,170,542,454.12/857,485.68
  6. Step 6: Final answer
    x = 387,377.36

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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.