Home / 685,054.71-1,027,680.45-211,776.96

Finding the Fourth Proportional to 685,054.71, 1,027,680.45 and 211,776.96

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Solution

The fourth proportional to 685,054.71, 1,027,680.45 and 211,776.96 is: 317,695.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,054.71 : 1,027,680.45 = 211,776.96 : x
  2. Step 2: Convert to fraction form
    685,054.71/1,027,680.45 = 211,776.96/x
  3. Step 3: Cross multiply
    685,054.71x = 1,027,680.45 × 211,776.96
  4. Step 4: Simplify right side
    685,054.71x = 217,639,041,552.43
  5. Step 5: Solve for x
    x = 217,639,041,552.43/685,054.71
  6. Step 6: Final answer
    x = 317,695.85

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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.