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Finding the Fourth Proportional to 519,162.63, 779,408.15 and 440,774.88

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Solution

The fourth proportional to 519,162.63, 779,408.15 and 440,774.88 is: 661,726.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,162.63 : 779,408.15 = 440,774.88 : x
  2. Step 2: Convert to fraction form
    519,162.63/779,408.15 = 440,774.88/x
  3. Step 3: Cross multiply
    519,162.63x = 779,408.15 × 440,774.88
  4. Step 4: Simplify right side
    519,162.63x = 343,543,531,583.40
  5. Step 5: Solve for x
    x = 343,543,531,583.40/519,162.63
  6. Step 6: Final answer
    x = 661,726.23

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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.