Home / 857,375.98-1,285,032.42-317,201.56

Finding the Fourth Proportional to 857,375.98, 1,285,032.42 and 317,201.56

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Solution

The fourth proportional to 857,375.98, 1,285,032.42 and 317,201.56 is: 475,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,375.98 : 1,285,032.42 = 317,201.56 : x
  2. Step 2: Convert to fraction form
    857,375.98/1,285,032.42 = 317,201.56/x
  3. Step 3: Cross multiply
    857,375.98x = 1,285,032.42 × 317,201.56
  4. Step 4: Simplify right side
    857,375.98x = 407,614,288,274.58
  5. Step 5: Solve for x
    x = 407,614,288,274.58/857,375.98
  6. Step 6: Final answer
    x = 475,420.70

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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.