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Finding the Fourth Proportional to 519,545, 779,448.72 and 145,568

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Solution

The fourth proportional to 519,545, 779,448.72 and 145,568 is: 218,388.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,545 : 779,448.72 = 145,568 : x
  2. Step 2: Convert to fraction form
    519,545/779,448.72 = 145,568/x
  3. Step 3: Cross multiply
    519,545x = 779,448.72 × 145,568
  4. Step 4: Simplify right side
    519,545x = 113,462,791,272.96
  5. Step 5: Solve for x
    x = 113,462,791,272.96/519,545
  6. Step 6: Final answer
    x = 218,388.77

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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.