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Finding the Fourth Proportional to 525,402.38, 787,609.83 and 397,122.50

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Solution

The fourth proportional to 525,402.38, 787,609.83 and 397,122.50 is: 595,310.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,402.38 : 787,609.83 = 397,122.50 : x
  2. Step 2: Convert to fraction form
    525,402.38/787,609.83 = 397,122.50/x
  3. Step 3: Cross multiply
    525,402.38x = 787,609.83 × 397,122.50
  4. Step 4: Simplify right side
    525,402.38x = 312,777,584,714.18
  5. Step 5: Solve for x
    x = 312,777,584,714.18/525,402.38
  6. Step 6: Final answer
    x = 595,310.56

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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.