Home / 680,205.78-1,020,702.94-343,272.78

Finding the Fourth Proportional to 680,205.78, 1,020,702.94 and 343,272.78

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Solution

The fourth proportional to 680,205.78, 1,020,702.94 and 343,272.78 is: 515,108.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,205.78 : 1,020,702.94 = 343,272.78 : x
  2. Step 2: Convert to fraction form
    680,205.78/1,020,702.94 = 343,272.78/x
  3. Step 3: Cross multiply
    680,205.78x = 1,020,702.94 × 343,272.78
  4. Step 4: Simplify right side
    680,205.78x = 350,379,535,767.97
  5. Step 5: Solve for x
    x = 350,379,535,767.97/680,205.78
  6. Step 6: Final answer
    x = 515,108.14

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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.