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Finding the Fourth Proportional to 508,436.52, 701,629.04 and 278,993.10

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Solution

The fourth proportional to 508,436.52, 701,629.04 and 278,993.10 is: 385,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,436.52 : 701,629.04 = 278,993.10 : x
  2. Step 2: Convert to fraction form
    508,436.52/701,629.04 = 278,993.10/x
  3. Step 3: Cross multiply
    508,436.52x = 701,629.04 × 278,993.10
  4. Step 4: Simplify right side
    508,436.52x = 195,749,660,919.62
  5. Step 5: Solve for x
    x = 195,749,660,919.62/508,436.52
  6. Step 6: Final answer
    x = 385,003.15

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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.