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Finding the Fourth Proportional to 501,361, 691,878.18 and 275,007.04

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Solution

The fourth proportional to 501,361, 691,878.18 and 275,007.04 is: 379,509.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,361 : 691,878.18 = 275,007.04 : x
  2. Step 2: Convert to fraction form
    501,361/691,878.18 = 275,007.04/x
  3. Step 3: Cross multiply
    501,361x = 691,878.18 × 275,007.04
  4. Step 4: Simplify right side
    501,361x = 190,271,370,322.39
  5. Step 5: Solve for x
    x = 190,271,370,322.39/501,361
  6. Step 6: Final answer
    x = 379,509.72

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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.