Home / 393,944,989.46-590,981,701.19-121,315,756.46

Finding the Fourth Proportional to 393,944,989.46, 590,981,701.19 and 121,315,756.46

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Solution

The fourth proportional to 393,944,989.46, 590,981,701.19 and 121,315,756.46 is: 181,993,410.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,944,989.46 : 590,981,701.19 = 121,315,756.46 : x
  2. Step 2: Convert to fraction form
    393,944,989.46/590,981,701.19 = 121,315,756.46/x
  3. Step 3: Cross multiply
    393,944,989.46x = 590,981,701.19 × 121,315,756.46
  4. Step 4: Simplify right side
    393,944,989.46x = 71,695,392,130,321,040
  5. Step 5: Solve for x
    x = 71,695,392,130,321,040/393,944,989.46
  6. Step 6: Final answer
    x = 181,993,410.37

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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.