Home / 857,092.72-1,285,879.80-317,340.88

Finding the Fourth Proportional to 857,092.72, 1,285,879.80 and 317,340.88

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Solution

The fourth proportional to 857,092.72, 1,285,879.80 and 317,340.88 is: 476,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,092.72 : 1,285,879.80 = 317,340.88 : x
  2. Step 2: Convert to fraction form
    857,092.72/1,285,879.80 = 317,340.88/x
  3. Step 3: Cross multiply
    857,092.72x = 1,285,879.80 × 317,340.88
  4. Step 4: Simplify right side
    857,092.72x = 408,062,227,306.22
  5. Step 5: Solve for x
    x = 408,062,227,306.22/857,092.72
  6. Step 6: Final answer
    x = 476,100.45

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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.