Home / 680,116.20-1,020,563.10-259,693.80

Finding the Fourth Proportional to 680,116.20, 1,020,563.10 and 259,693.80

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Solution

The fourth proportional to 680,116.20, 1,020,563.10 and 259,693.80 is: 389,689.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,116.20 : 1,020,563.10 = 259,693.80 : x
  2. Step 2: Convert to fraction form
    680,116.20/1,020,563.10 = 259,693.80/x
  3. Step 3: Cross multiply
    680,116.20x = 1,020,563.10 × 259,693.80
  4. Step 4: Simplify right side
    680,116.20x = 265,033,909,578.78
  5. Step 5: Solve for x
    x = 265,033,909,578.78/680,116.20
  6. Step 6: Final answer
    x = 389,689.16

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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.