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Finding the Fourth Proportional to 379,903.86, 526,664.79 and 359,679.78

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Solution

The fourth proportional to 379,903.86, 526,664.79 and 359,679.78 is: 498,627.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,903.86 : 526,664.79 = 359,679.78 : x
  2. Step 2: Convert to fraction form
    379,903.86/526,664.79 = 359,679.78/x
  3. Step 3: Cross multiply
    379,903.86x = 526,664.79 × 359,679.78
  4. Step 4: Simplify right side
    379,903.86x = 189,430,675,800.95
  5. Step 5: Solve for x
    x = 189,430,675,800.95/379,903.86
  6. Step 6: Final answer
    x = 498,627.93

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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.