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Finding the Fourth Proportional to 498,422.07, 687,813.66 and 283,557.54

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Solution

The fourth proportional to 498,422.07, 687,813.66 and 283,557.54 is: 391,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,422.07 : 687,813.66 = 283,557.54 : x
  2. Step 2: Convert to fraction form
    498,422.07/687,813.66 = 283,557.54/x
  3. Step 3: Cross multiply
    498,422.07x = 687,813.66 × 283,557.54
  4. Step 4: Simplify right side
    498,422.07x = 195,034,749,408.00
  5. Step 5: Solve for x
    x = 195,034,749,408.00/498,422.07
  6. Step 6: Final answer
    x = 391,304.40

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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.