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Finding the Fourth Proportional to 866,616, 1,195,920 and 484,639.20

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Solution

The fourth proportional to 866,616, 1,195,920 and 484,639.20 is: 668,796.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,616 : 1,195,920 = 484,639.20 : x
  2. Step 2: Convert to fraction form
    866,616/1,195,920 = 484,639.20/x
  3. Step 3: Cross multiply
    866,616x = 1,195,920 × 484,639.20
  4. Step 4: Simplify right side
    866,616x = 579,589,712,064
  5. Step 5: Solve for x
    x = 579,589,712,064/866,616
  6. Step 6: Final answer
    x = 668,796.46

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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.