Home / 680,338.20-1,020,896.10-259,915.80

Finding the Fourth Proportional to 680,338.20, 1,020,896.10 and 259,915.80

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Solution

The fourth proportional to 680,338.20, 1,020,896.10 and 259,915.80 is: 390,022.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,338.20 : 1,020,896.10 = 259,915.80 : x
  2. Step 2: Convert to fraction form
    680,338.20/1,020,896.10 = 259,915.80/x
  3. Step 3: Cross multiply
    680,338.20x = 1,020,896.10 × 259,915.80
  4. Step 4: Simplify right side
    680,338.20x = 265,347,026,548.38
  5. Step 5: Solve for x
    x = 265,347,026,548.38/680,338.20
  6. Step 6: Final answer
    x = 390,022.24

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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.