Home / 680,090.85-1,020,193.38-206,780.31

Finding the Fourth Proportional to 680,090.85, 1,020,193.38 and 206,780.31

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Solution

The fourth proportional to 680,090.85, 1,020,193.38 and 206,780.31 is: 310,187.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,090.85 : 1,020,193.38 = 206,780.31 : x
  2. Step 2: Convert to fraction form
    680,090.85/1,020,193.38 = 206,780.31/x
  3. Step 3: Cross multiply
    680,090.85x = 1,020,193.38 × 206,780.31
  4. Step 4: Simplify right side
    680,090.85x = 210,955,903,376.35
  5. Step 5: Solve for x
    x = 210,955,903,376.35/680,090.85
  6. Step 6: Final answer
    x = 310,187.83

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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.