Home / 485,004,821.70-727,507,232.55-139,969,704.90

Finding the Fourth Proportional to 485,004,821.70, 727,507,232.55 and 139,969,704.90

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Solution

The fourth proportional to 485,004,821.70, 727,507,232.55 and 139,969,704.90 is: 209,954,557.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,004,821.70 : 727,507,232.55 = 139,969,704.90 : x
  2. Step 2: Convert to fraction form
    485,004,821.70/727,507,232.55 = 139,969,704.90/x
  3. Step 3: Cross multiply
    485,004,821.70x = 727,507,232.55 × 139,969,704.90
  4. Step 4: Simplify right side
    485,004,821.70x = 101,828,972,652,639,168
  5. Step 5: Solve for x
    x = 101,828,972,652,639,168/485,004,821.70
  6. Step 6: Final answer
    x = 209,954,557.35

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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.