Home / 1,186,685.20-1,780,200.60-388,003.60

Finding the Fourth Proportional to 1,186,685.20, 1,780,200.60 and 388,003.60

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Solution

The fourth proportional to 1,186,685.20, 1,780,200.60 and 388,003.60 is: 582,061.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,685.20 : 1,780,200.60 = 388,003.60 : x
  2. Step 2: Convert to fraction form
    1,186,685.20/1,780,200.60 = 388,003.60/x
  3. Step 3: Cross multiply
    1,186,685.20x = 1,780,200.60 × 388,003.60
  4. Step 4: Simplify right side
    1,186,685.20x = 690,724,241,522.16
  5. Step 5: Solve for x
    x = 690,724,241,522.16/1,186,685.20
  6. Step 6: Final answer
    x = 582,061.90

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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.