Home / 680,307.20-1,020,608.40-206,980.25

Finding the Fourth Proportional to 680,307.20, 1,020,608.40 and 206,980.25

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Solution

The fourth proportional to 680,307.20, 1,020,608.40 and 206,980.25 is: 310,515.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,307.20 : 1,020,608.40 = 206,980.25 : x
  2. Step 2: Convert to fraction form
    680,307.20/1,020,608.40 = 206,980.25/x
  3. Step 3: Cross multiply
    680,307.20x = 1,020,608.40 × 206,980.25
  4. Step 4: Simplify right side
    680,307.20x = 211,245,781,784.10
  5. Step 5: Solve for x
    x = 211,245,781,784.10/680,307.20
  6. Step 6: Final answer
    x = 310,515.28

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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.