Home / 1,186,955.28-1,780,505.28-388,321.20

Finding the Fourth Proportional to 1,186,955.28, 1,780,505.28 and 388,321.20

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Solution

The fourth proportional to 1,186,955.28, 1,780,505.28 and 388,321.20 is: 582,505.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,955.28 : 1,780,505.28 = 388,321.20 : x
  2. Step 2: Convert to fraction form
    1,186,955.28/1,780,505.28 = 388,321.20/x
  3. Step 3: Cross multiply
    1,186,955.28x = 1,780,505.28 × 388,321.20
  4. Step 4: Simplify right side
    1,186,955.28x = 691,407,946,935.94
  5. Step 5: Solve for x
    x = 691,407,946,935.94/1,186,955.28
  6. Step 6: Final answer
    x = 582,505.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.