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Finding the Fourth Proportional to 1,347,845.92, 1,859,978.64 and 744,220.96

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Solution

The fourth proportional to 1,347,845.92, 1,859,978.64 and 744,220.96 is: 1,026,998.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347,845.92 : 1,859,978.64 = 744,220.96 : x
  2. Step 2: Convert to fraction form
    1,347,845.92/1,859,978.64 = 744,220.96/x
  3. Step 3: Cross multiply
    1,347,845.92x = 1,859,978.64 × 744,220.96
  4. Step 4: Simplify right side
    1,347,845.92x = 1,384,235,089,040.29
  5. Step 5: Solve for x
    x = 1,384,235,089,040.29/1,347,845.92
  6. Step 6: Final answer
    x = 1,026,998.02

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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.