Home / 857,470.82-1,285,085-351,439.34

Finding the Fourth Proportional to 857,470.82, 1,285,085 and 351,439.34

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Solution

The fourth proportional to 857,470.82, 1,285,085 and 351,439.34 is: 526,699.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,470.82 : 1,285,085 = 351,439.34 : x
  2. Step 2: Convert to fraction form
    857,470.82/1,285,085 = 351,439.34/x
  3. Step 3: Cross multiply
    857,470.82x = 1,285,085 × 351,439.34
  4. Step 4: Simplify right side
    857,470.82x = 451,629,424,243.90
  5. Step 5: Solve for x
    x = 451,629,424,243.90/857,470.82
  6. Step 6: Final answer
    x = 526,699.47

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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.