Home / 680,021.36-1,020,148.72-206,754.56

Finding the Fourth Proportional to 680,021.36, 1,020,148.72 and 206,754.56

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Solution

The fourth proportional to 680,021.36, 1,020,148.72 and 206,754.56 is: 310,167.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,021.36 : 1,020,148.72 = 206,754.56 : x
  2. Step 2: Convert to fraction form
    680,021.36/1,020,148.72 = 206,754.56/x
  3. Step 3: Cross multiply
    680,021.36x = 1,020,148.72 × 206,754.56
  4. Step 4: Simplify right side
    680,021.36x = 210,920,399,738.16
  5. Step 5: Solve for x
    x = 210,920,399,738.16/680,021.36
  6. Step 6: Final answer
    x = 310,167.32

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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.