Home / 680,112.42-1,020,225.78-206,801.88

Finding the Fourth Proportional to 680,112.42, 1,020,225.78 and 206,801.88

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Solution

The fourth proportional to 680,112.42, 1,020,225.78 and 206,801.88 is: 310,220.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,112.42 : 1,020,225.78 = 206,801.88 : x
  2. Step 2: Convert to fraction form
    680,112.42/1,020,225.78 = 206,801.88/x
  3. Step 3: Cross multiply
    680,112.42x = 1,020,225.78 × 206,801.88
  4. Step 4: Simplify right side
    680,112.42x = 210,984,609,328.47
  5. Step 5: Solve for x
    x = 210,984,609,328.47/680,112.42
  6. Step 6: Final answer
    x = 310,220.20

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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.