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Finding the Fourth Proportional to 539,322.66, 808,212.92 and 396,043.76

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Solution

The fourth proportional to 539,322.66, 808,212.92 and 396,043.76 is: 593,499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,322.66 : 808,212.92 = 396,043.76 : x
  2. Step 2: Convert to fraction form
    539,322.66/808,212.92 = 396,043.76/x
  3. Step 3: Cross multiply
    539,322.66x = 808,212.92 × 396,043.76
  4. Step 4: Simplify right side
    539,322.66x = 320,087,683,717.38
  5. Step 5: Solve for x
    x = 320,087,683,717.38/539,322.66
  6. Step 6: Final answer
    x = 593,499.42

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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.