Home / 1,388,709.88-1,916,342.54-776,744.44

Finding the Fourth Proportional to 1,388,709.88, 1,916,342.54 and 776,744.44

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Solution

The fourth proportional to 1,388,709.88, 1,916,342.54 and 776,744.44 is: 1,071,864.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,709.88 : 1,916,342.54 = 776,744.44 : x
  2. Step 2: Convert to fraction form
    1,388,709.88/1,916,342.54 = 776,744.44/x
  3. Step 3: Cross multiply
    1,388,709.88x = 1,916,342.54 × 776,744.44
  4. Step 4: Simplify right side
    1,388,709.88x = 1,488,508,413,080.48
  5. Step 5: Solve for x
    x = 1,488,508,413,080.48/1,388,709.88
  6. Step 6: Final answer
    x = 1,071,864.21

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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.