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Finding the Fourth Proportional to 531,645.78, 796,565.97 and 320,840.76

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Solution

The fourth proportional to 531,645.78, 796,565.97 and 320,840.76 is: 480,716.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,645.78 : 796,565.97 = 320,840.76 : x
  2. Step 2: Convert to fraction form
    531,645.78/796,565.97 = 320,840.76/x
  3. Step 3: Cross multiply
    531,645.78x = 796,565.97 × 320,840.76
  4. Step 4: Simplify right side
    531,645.78x = 255,570,831,204.94
  5. Step 5: Solve for x
    x = 255,570,831,204.94/531,645.78
  6. Step 6: Final answer
    x = 480,716.37

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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.