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Finding the Fourth Proportional to 618,540.33, 926,235.45 and 407,538.57

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Solution

The fourth proportional to 618,540.33, 926,235.45 and 407,538.57 is: 610,270.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,540.33 : 926,235.45 = 407,538.57 : x
  2. Step 2: Convert to fraction form
    618,540.33/926,235.45 = 407,538.57/x
  3. Step 3: Cross multiply
    618,540.33x = 926,235.45 × 407,538.57
  4. Step 4: Simplify right side
    618,540.33x = 377,476,670,776.31
  5. Step 5: Solve for x
    x = 377,476,670,776.31/618,540.33
  6. Step 6: Final answer
    x = 610,270.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.