Home / 685,058.30-1,027,685.86-211,780.56

Finding the Fourth Proportional to 685,058.30, 1,027,685.86 and 211,780.56

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Solution

The fourth proportional to 685,058.30, 1,027,685.86 and 211,780.56 is: 317,701.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,058.30 : 1,027,685.86 = 211,780.56 : x
  2. Step 2: Convert to fraction form
    685,058.30/1,027,685.86 = 211,780.56/x
  3. Step 3: Cross multiply
    685,058.30x = 1,027,685.86 × 211,780.56
  4. Step 4: Simplify right side
    685,058.30x = 217,643,886,934.88
  5. Step 5: Solve for x
    x = 217,643,886,934.88/685,058.30
  6. Step 6: Final answer
    x = 317,701.26

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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.