Home / 1,207,975.94-1,666,964.30-664,107.78

Finding the Fourth Proportional to 1,207,975.94, 1,666,964.30 and 664,107.78

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Solution

The fourth proportional to 1,207,975.94, 1,666,964.30 and 664,107.78 is: 916,445.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,975.94 : 1,666,964.30 = 664,107.78 : x
  2. Step 2: Convert to fraction form
    1,207,975.94/1,666,964.30 = 664,107.78/x
  3. Step 3: Cross multiply
    1,207,975.94x = 1,666,964.30 × 664,107.78
  4. Step 4: Simplify right side
    1,207,975.94x = 1,107,043,960,612.25
  5. Step 5: Solve for x
    x = 1,107,043,960,612.25/1,207,975.94
  6. Step 6: Final answer
    x = 916,445.37

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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.