Home / 1,388,720.20-2,078,414.70-968,816.20

Finding the Fourth Proportional to 1,388,720.20, 2,078,414.70 and 968,816.20

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Solution

The fourth proportional to 1,388,720.20, 2,078,414.70 and 968,816.20 is: 1,449,969.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,720.20 : 2,078,414.70 = 968,816.20 : x
  2. Step 2: Convert to fraction form
    1,388,720.20/2,078,414.70 = 968,816.20/x
  3. Step 3: Cross multiply
    1,388,720.20x = 2,078,414.70 × 968,816.20
  4. Step 4: Simplify right side
    1,388,720.20x = 2,013,601,831,678.14
  5. Step 5: Solve for x
    x = 2,013,601,831,678.14/1,388,720.20
  6. Step 6: Final answer
    x = 1,449,969.43

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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.