Home / 485,004,811.20-727,507,216.80-139,969,694.40

Finding the Fourth Proportional to 485,004,811.20, 727,507,216.80 and 139,969,694.40

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Solution

The fourth proportional to 485,004,811.20, 727,507,216.80 and 139,969,694.40 is: 209,954,541.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,004,811.20 : 727,507,216.80 = 139,969,694.40 : x
  2. Step 2: Convert to fraction form
    485,004,811.20/727,507,216.80 = 139,969,694.40/x
  3. Step 3: Cross multiply
    485,004,811.20x = 727,507,216.80 × 139,969,694.40
  4. Step 4: Simplify right side
    485,004,811.20x = 101,828,962,809,290,544
  5. Step 5: Solve for x
    x = 101,828,962,809,290,544/485,004,811.20
  6. Step 6: Final answer
    x = 209,954,541.60

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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.