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Finding the Fourth Proportional to 689,564.16, 951,580.20 and 383,625

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Solution

The fourth proportional to 689,564.16, 951,580.20 and 383,625 is: 529,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,564.16 : 951,580.20 = 383,625 : x
  2. Step 2: Convert to fraction form
    689,564.16/951,580.20 = 383,625/x
  3. Step 3: Cross multiply
    689,564.16x = 951,580.20 × 383,625
  4. Step 4: Simplify right side
    689,564.16x = 365,049,954,225
  5. Step 5: Solve for x
    x = 365,049,954,225/689,564.16
  6. Step 6: Final answer
    x = 529,392.30

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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.