Home / 1,215,660.43-1,677,616.53-664,387.39

Finding the Fourth Proportional to 1,215,660.43, 1,677,616.53 and 664,387.39

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Solution

The fourth proportional to 1,215,660.43, 1,677,616.53 and 664,387.39 is: 916,857.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,660.43 : 1,677,616.53 = 664,387.39 : x
  2. Step 2: Convert to fraction form
    1,215,660.43/1,677,616.53 = 664,387.39/x
  3. Step 3: Cross multiply
    1,215,660.43x = 1,677,616.53 × 664,387.39
  4. Step 4: Simplify right side
    1,215,660.43x = 1,114,587,267,787.56
  5. Step 5: Solve for x
    x = 1,114,587,267,787.56/1,215,660.43
  6. Step 6: Final answer
    x = 916,857.41

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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.