Home / 857,099.20-1,285,418.40-258,059.20

Finding the Fourth Proportional to 857,099.20, 1,285,418.40 and 258,059.20

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Solution

The fourth proportional to 857,099.20, 1,285,418.40 and 258,059.20 is: 387,019.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,099.20 : 1,285,418.40 = 258,059.20 : x
  2. Step 2: Convert to fraction form
    857,099.20/1,285,418.40 = 258,059.20/x
  3. Step 3: Cross multiply
    857,099.20x = 1,285,418.40 × 258,059.20
  4. Step 4: Simplify right side
    857,099.20x = 331,714,043,969.28
  5. Step 5: Solve for x
    x = 331,714,043,969.28/857,099.20
  6. Step 6: Final answer
    x = 387,019.43

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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.