Home / 1,388,767.80-1,916,422.34-776,802.48

Finding the Fourth Proportional to 1,388,767.80, 1,916,422.34 and 776,802.48

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Solution

The fourth proportional to 1,388,767.80, 1,916,422.34 and 776,802.48 is: 1,071,944.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,767.80 : 1,916,422.34 = 776,802.48 : x
  2. Step 2: Convert to fraction form
    1,388,767.80/1,916,422.34 = 776,802.48/x
  3. Step 3: Cross multiply
    1,388,767.80x = 1,916,422.34 × 776,802.48
  4. Step 4: Simplify right side
    1,388,767.80x = 1,488,681,622,555.39
  5. Step 5: Solve for x
    x = 1,488,681,622,555.39/1,388,767.80
  6. Step 6: Final answer
    x = 1,071,944.22

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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.