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Finding the Fourth Proportional to 519,626.22, 779,489.04 and 145,648.14

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Solution

The fourth proportional to 519,626.22, 779,489.04 and 145,648.14 is: 218,486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,626.22 : 779,489.04 = 145,648.14 : x
  2. Step 2: Convert to fraction form
    519,626.22/779,489.04 = 145,648.14/x
  3. Step 3: Cross multiply
    519,626.22x = 779,489.04 × 145,648.14
  4. Step 4: Simplify right side
    519,626.22x = 113,531,128,826.39
  5. Step 5: Solve for x
    x = 113,531,128,826.39/519,626.22
  6. Step 6: Final answer
    x = 218,486.14

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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.