Home / 1,388,287.50-1,915,756.83-768,055.38

Finding the Fourth Proportional to 1,388,287.50, 1,915,756.83 and 768,055.38

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Solution

The fourth proportional to 1,388,287.50, 1,915,756.83 and 768,055.38 is: 1,059,872.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,287.50 : 1,915,756.83 = 768,055.38 : x
  2. Step 2: Convert to fraction form
    1,388,287.50/1,915,756.83 = 768,055.38/x
  3. Step 3: Cross multiply
    1,388,287.50x = 1,915,756.83 × 768,055.38
  4. Step 4: Simplify right side
    1,388,287.50x = 1,471,407,340,053.25
  5. Step 5: Solve for x
    x = 1,471,407,340,053.25/1,388,287.50
  6. Step 6: Final answer
    x = 1,059,872.21

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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.