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Finding the Fourth Proportional to 519,755.52, 779,662.44 and 145,807.68

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Solution

The fourth proportional to 519,755.52, 779,662.44 and 145,807.68 is: 218,719.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,755.52 : 779,662.44 = 145,807.68 : x
  2. Step 2: Convert to fraction form
    519,755.52/779,662.44 = 145,807.68/x
  3. Step 3: Cross multiply
    519,755.52x = 779,662.44 × 145,807.68
  4. Step 4: Simplify right side
    519,755.52x = 113,680,771,559.54
  5. Step 5: Solve for x
    x = 113,680,771,559.54/519,755.52
  6. Step 6: Final answer
    x = 218,719.70

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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.