Home / 628,817.68-867,786.56-342,342.64

Finding the Fourth Proportional to 628,817.68, 867,786.56 and 342,342.64

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Solution

The fourth proportional to 628,817.68, 867,786.56 and 342,342.64 is: 472,442.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,817.68 : 867,786.56 = 342,342.64 : x
  2. Step 2: Convert to fraction form
    628,817.68/867,786.56 = 342,342.64/x
  3. Step 3: Cross multiply
    628,817.68x = 867,786.56 × 342,342.64
  4. Step 4: Simplify right side
    628,817.68x = 297,080,341,906.92
  5. Step 5: Solve for x
    x = 297,080,341,906.92/628,817.68
  6. Step 6: Final answer
    x = 472,442.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.