Home / 1,188,480.20-1,640,738.13-929,807.30

Finding the Fourth Proportional to 1,188,480.20, 1,640,738.13 and 929,807.30

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Solution

The fourth proportional to 1,188,480.20, 1,640,738.13 and 929,807.30 is: 1,283,631.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,480.20 : 1,640,738.13 = 929,807.30 : x
  2. Step 2: Convert to fraction form
    1,188,480.20/1,640,738.13 = 929,807.30/x
  3. Step 3: Cross multiply
    1,188,480.20x = 1,640,738.13 × 929,807.30
  4. Step 4: Simplify right side
    1,188,480.20x = 1,525,570,291,277.42
  5. Step 5: Solve for x
    x = 1,525,570,291,277.42/1,188,480.20
  6. Step 6: Final answer
    x = 1,283,631.23

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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.