Home / 678,903.24-936,902.97-372,999.43

Finding the Fourth Proportional to 678,903.24, 936,902.97 and 372,999.43

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Solution

The fourth proportional to 678,903.24, 936,902.97 and 372,999.43 is: 514,748.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,903.24 : 936,902.97 = 372,999.43 : x
  2. Step 2: Convert to fraction form
    678,903.24/936,902.97 = 372,999.43/x
  3. Step 3: Cross multiply
    678,903.24x = 936,902.97 × 372,999.43
  4. Step 4: Simplify right side
    678,903.24x = 349,464,273,775.31
  5. Step 5: Solve for x
    x = 349,464,273,775.31/678,903.24
  6. Step 6: Final answer
    x = 514,748.28

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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.