Home / 1,298,761.40-1,792,842.54-789,626.36

Finding the Fourth Proportional to 1,298,761.40, 1,792,842.54 and 789,626.36

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Solution

The fourth proportional to 1,298,761.40, 1,792,842.54 and 789,626.36 is: 1,090,019.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,761.40 : 1,792,842.54 = 789,626.36 : x
  2. Step 2: Convert to fraction form
    1,298,761.40/1,792,842.54 = 789,626.36/x
  3. Step 3: Cross multiply
    1,298,761.40x = 1,792,842.54 × 789,626.36
  4. Step 4: Simplify right side
    1,298,761.40x = 1,415,675,728,913.35
  5. Step 5: Solve for x
    x = 1,415,675,728,913.35/1,298,761.40
  6. Step 6: Final answer
    x = 1,090,019.87

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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.