Home / 857,540.40-1,285,895.16-258,389.88

Finding the Fourth Proportional to 857,540.40, 1,285,895.16 and 258,389.88

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Solution

The fourth proportional to 857,540.40, 1,285,895.16 and 258,389.88 is: 387,459.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,540.40 : 1,285,895.16 = 258,389.88 : x
  2. Step 2: Convert to fraction form
    857,540.40/1,285,895.16 = 258,389.88/x
  3. Step 3: Cross multiply
    857,540.40x = 1,285,895.16 × 258,389.88
  4. Step 4: Simplify right side
    857,540.40x = 332,262,296,084.98
  5. Step 5: Solve for x
    x = 332,262,296,084.98/857,540.40
  6. Step 6: Final answer
    x = 387,459.64

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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.