Home / 1,388,564.76-1,915,447.97-807,722.51

Finding the Fourth Proportional to 1,388,564.76, 1,915,447.97 and 807,722.51

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Solution

The fourth proportional to 1,388,564.76, 1,915,447.97 and 807,722.51 is: 1,114,208.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,564.76 : 1,915,447.97 = 807,722.51 : x
  2. Step 2: Convert to fraction form
    1,388,564.76/1,915,447.97 = 807,722.51/x
  3. Step 3: Cross multiply
    1,388,564.76x = 1,915,447.97 × 807,722.51
  4. Step 4: Simplify right side
    1,388,564.76x = 1,547,150,434,544.87
  5. Step 5: Solve for x
    x = 1,547,150,434,544.87/1,388,564.76
  6. Step 6: Final answer
    x = 1,114,208.34

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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.