Home / 680,281.20-1,020,810.60-259,858.80

Finding the Fourth Proportional to 680,281.20, 1,020,810.60 and 259,858.80

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Solution

The fourth proportional to 680,281.20, 1,020,810.60 and 259,858.80 is: 389,936.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,281.20 : 1,020,810.60 = 259,858.80 : x
  2. Step 2: Convert to fraction form
    680,281.20/1,020,810.60 = 259,858.80/x
  3. Step 3: Cross multiply
    680,281.20x = 1,020,810.60 × 259,858.80
  4. Step 4: Simplify right side
    680,281.20x = 265,266,617,543.28
  5. Step 5: Solve for x
    x = 265,266,617,543.28/680,281.20
  6. Step 6: Final answer
    x = 389,936.72

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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.