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Finding the Fourth Proportional to 2,265,828.18, 3,398,742.09 and 769,920.18

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Solution

The fourth proportional to 2,265,828.18, 3,398,742.09 and 769,920.18 is: 1,154,880.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265,828.18 : 3,398,742.09 = 769,920.18 : x
  2. Step 2: Convert to fraction form
    2,265,828.18/3,398,742.09 = 769,920.18/x
  3. Step 3: Cross multiply
    2,265,828.18x = 3,398,742.09 × 769,920.18
  4. Step 4: Simplify right side
    2,265,828.18x = 2,616,760,121,706.38
  5. Step 5: Solve for x
    x = 2,616,760,121,706.38/2,265,828.18
  6. Step 6: Final answer
    x = 1,154,880.21

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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.