Home / 857,145.18-1,285,897.59-324,654.42

Finding the Fourth Proportional to 857,145.18, 1,285,897.59 and 324,654.42

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Solution

The fourth proportional to 857,145.18, 1,285,897.59 and 324,654.42 is: 487,049.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,145.18 : 1,285,897.59 = 324,654.42 : x
  2. Step 2: Convert to fraction form
    857,145.18/1,285,897.59 = 324,654.42/x
  3. Step 3: Cross multiply
    857,145.18x = 1,285,897.59 × 324,654.42
  4. Step 4: Simplify right side
    857,145.18x = 417,472,336,260.85
  5. Step 5: Solve for x
    x = 417,472,336,260.85/857,145.18
  6. Step 6: Final answer
    x = 487,049.74

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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.