Home / 1,215,942.05-1,677,970.89-664,633.17

Finding the Fourth Proportional to 1,215,942.05, 1,677,970.89 and 664,633.17

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Solution

The fourth proportional to 1,215,942.05, 1,677,970.89 and 664,633.17 is: 917,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,942.05 : 1,677,970.89 = 664,633.17 : x
  2. Step 2: Convert to fraction form
    1,215,942.05/1,677,970.89 = 664,633.17/x
  3. Step 3: Cross multiply
    1,215,942.05x = 1,677,970.89 × 664,633.17
  4. Step 4: Simplify right side
    1,215,942.05x = 1,115,235,111,788.42
  5. Step 5: Solve for x
    x = 1,115,235,111,788.42/1,215,942.05
  6. Step 6: Final answer
    x = 917,177.85

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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.