Home / 1,377,131.80-1,900,391.34-765,322.60

Finding the Fourth Proportional to 1,377,131.80, 1,900,391.34 and 765,322.60

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Solution

The fourth proportional to 1,377,131.80, 1,900,391.34 and 765,322.60 is: 1,056,117.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,131.80 : 1,900,391.34 = 765,322.60 : x
  2. Step 2: Convert to fraction form
    1,377,131.80/1,900,391.34 = 765,322.60/x
  3. Step 3: Cross multiply
    1,377,131.80x = 1,900,391.34 × 765,322.60
  4. Step 4: Simplify right side
    1,377,131.80x = 1,454,412,441,346.28
  5. Step 5: Solve for x
    x = 1,454,412,441,346.28/1,377,131.80
  6. Step 6: Final answer
    x = 1,056,117.10

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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.