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Finding the Fourth Proportional to 519,402.39, 779,453.50 and 203,822.07

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Solution

The fourth proportional to 519,402.39, 779,453.50 and 203,822.07 is: 305,870.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,402.39 : 779,453.50 = 203,822.07 : x
  2. Step 2: Convert to fraction form
    519,402.39/779,453.50 = 203,822.07/x
  3. Step 3: Cross multiply
    519,402.39x = 779,453.50 × 203,822.07
  4. Step 4: Simplify right side
    519,402.39x = 158,869,825,838.75
  5. Step 5: Solve for x
    x = 158,869,825,838.75/519,402.39
  6. Step 6: Final answer
    x = 305,870.42

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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.