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Finding the Fourth Proportional to 561,572.72, 774,721.68 and 335,087.36

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Solution

The fourth proportional to 561,572.72, 774,721.68 and 335,087.36 is: 462,272.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,572.72 : 774,721.68 = 335,087.36 : x
  2. Step 2: Convert to fraction form
    561,572.72/774,721.68 = 335,087.36/x
  3. Step 3: Cross multiply
    561,572.72x = 774,721.68 × 335,087.36
  4. Step 4: Simplify right side
    561,572.72x = 259,599,442,485.97
  5. Step 5: Solve for x
    x = 259,599,442,485.97/561,572.72
  6. Step 6: Final answer
    x = 462,272.17

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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.