Home / 1,388,057.72-1,915,506.44-776,203.48

Finding the Fourth Proportional to 1,388,057.72, 1,915,506.44 and 776,203.48

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Solution

The fourth proportional to 1,388,057.72, 1,915,506.44 and 776,203.48 is: 1,071,153.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,057.72 : 1,915,506.44 = 776,203.48 : x
  2. Step 2: Convert to fraction form
    1,388,057.72/1,915,506.44 = 776,203.48/x
  3. Step 3: Cross multiply
    1,388,057.72x = 1,915,506.44 × 776,203.48
  4. Step 4: Simplify right side
    1,388,057.72x = 1,486,822,764,690.41
  5. Step 5: Solve for x
    x = 1,486,822,764,690.41/1,388,057.72
  6. Step 6: Final answer
    x = 1,071,153.41

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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.