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Finding the Fourth Proportional to 379,901.86, 526,662.01 and 359,677.78

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Solution

The fourth proportional to 379,901.86, 526,662.01 and 359,677.78 is: 498,625.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,901.86 : 526,662.01 = 359,677.78 : x
  2. Step 2: Convert to fraction form
    379,901.86/526,662.01 = 359,677.78/x
  3. Step 3: Cross multiply
    379,901.86x = 526,662.01 × 359,677.78
  4. Step 4: Simplify right side
    379,901.86x = 189,428,622,567.14
  5. Step 5: Solve for x
    x = 189,428,622,567.14/379,901.86
  6. Step 6: Final answer
    x = 498,625.15

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.