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Finding the Fourth Proportional to 919,059.86, 1,378,407.72 and 873,489.26

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Solution

The fourth proportional to 919,059.86, 1,378,407.72 and 873,489.26 is: 1,310,060.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,059.86 : 1,378,407.72 = 873,489.26 : x
  2. Step 2: Convert to fraction form
    919,059.86/1,378,407.72 = 873,489.26/x
  3. Step 3: Cross multiply
    919,059.86x = 1,378,407.72 × 873,489.26
  4. Step 4: Simplify right side
    919,059.86x = 1,204,024,346,042.69
  5. Step 5: Solve for x
    x = 1,204,024,346,042.69/919,059.86
  6. Step 6: Final answer
    x = 1,310,060.85

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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.