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Finding the Fourth Proportional to 501,435.76, 691,999.32 and 275,087.92

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Solution

The fourth proportional to 501,435.76, 691,999.32 and 275,087.92 is: 379,631.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,435.76 : 691,999.32 = 275,087.92 : x
  2. Step 2: Convert to fraction form
    501,435.76/691,999.32 = 275,087.92/x
  3. Step 3: Cross multiply
    501,435.76x = 691,999.32 × 275,087.92
  4. Step 4: Simplify right side
    501,435.76x = 190,360,653,580.21
  5. Step 5: Solve for x
    x = 190,360,653,580.21/501,435.76
  6. Step 6: Final answer
    x = 379,631.19

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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.