Home / 1,388,519.97-1,916,334.83-776,706.72

Finding the Fourth Proportional to 1,388,519.97, 1,916,334.83 and 776,706.72

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Solution

The fourth proportional to 1,388,519.97, 1,916,334.83 and 776,706.72 is: 1,071,954.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,519.97 : 1,916,334.83 = 776,706.72 : x
  2. Step 2: Convert to fraction form
    1,388,519.97/1,916,334.83 = 776,706.72/x
  3. Step 3: Cross multiply
    1,388,519.97x = 1,916,334.83 × 776,706.72
  4. Step 4: Simplify right side
    1,388,519.97x = 1,488,430,140,231.06
  5. Step 5: Solve for x
    x = 1,488,430,140,231.06/1,388,519.97
  6. Step 6: Final answer
    x = 1,071,954.44

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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.