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Finding the Fourth Proportional to 1,370,642.08, 1,891,684 and 789,753.94

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Solution

The fourth proportional to 1,370,642.08, 1,891,684 and 789,753.94 is: 1,089,974.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370,642.08 : 1,891,684 = 789,753.94 : x
  2. Step 2: Convert to fraction form
    1,370,642.08/1,891,684 = 789,753.94/x
  3. Step 3: Cross multiply
    1,370,642.08x = 1,891,684 × 789,753.94
  4. Step 4: Simplify right side
    1,370,642.08x = 1,493,964,892,234.96
  5. Step 5: Solve for x
    x = 1,493,964,892,234.96/1,370,642.08
  6. Step 6: Final answer
    x = 1,089,974.48

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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.