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Finding the Fourth Proportional to 525,401.88, 787,609.08 and 397,122

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Solution

The fourth proportional to 525,401.88, 787,609.08 and 397,122 is: 595,309.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,401.88 : 787,609.08 = 397,122 : x
  2. Step 2: Convert to fraction form
    525,401.88/787,609.08 = 397,122/x
  3. Step 3: Cross multiply
    525,401.88x = 787,609.08 × 397,122
  4. Step 4: Simplify right side
    525,401.88x = 312,776,893,067.76
  5. Step 5: Solve for x
    x = 312,776,893,067.76/525,401.88
  6. Step 6: Final answer
    x = 595,309.81

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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.