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Finding the Fourth Proportional to 550,418.76, 758,874.91 and 356,483.90

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Solution

The fourth proportional to 550,418.76, 758,874.91 and 356,483.90 is: 491,492.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,418.76 : 758,874.91 = 356,483.90 : x
  2. Step 2: Convert to fraction form
    550,418.76/758,874.91 = 356,483.90/x
  3. Step 3: Cross multiply
    550,418.76x = 758,874.91 × 356,483.90
  4. Step 4: Simplify right side
    550,418.76x = 270,526,686,077.37
  5. Step 5: Solve for x
    x = 270,526,686,077.37/550,418.76
  6. Step 6: Final answer
    x = 491,492.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.