Home / 1,388,637.66-1,916,229.60-776,684.39

Finding the Fourth Proportional to 1,388,637.66, 1,916,229.60 and 776,684.39

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Solution

The fourth proportional to 1,388,637.66, 1,916,229.60 and 776,684.39 is: 1,071,773.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,637.66 : 1,916,229.60 = 776,684.39 : x
  2. Step 2: Convert to fraction form
    1,388,637.66/1,916,229.60 = 776,684.39/x
  3. Step 3: Cross multiply
    1,388,637.66x = 1,916,229.60 × 776,684.39
  4. Step 4: Simplify right side
    1,388,637.66x = 1,488,305,608,394.80
  5. Step 5: Solve for x
    x = 1,488,305,608,394.80/1,388,637.66
  6. Step 6: Final answer
    x = 1,071,773.91

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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.