Home / 520,945.75-718,677.12-305,989.03

Finding the Fourth Proportional to 520,945.75, 718,677.12 and 305,989.03

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Solution

The fourth proportional to 520,945.75, 718,677.12 and 305,989.03 is: 422,130.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,945.75 : 718,677.12 = 305,989.03 : x
  2. Step 2: Convert to fraction form
    520,945.75/718,677.12 = 305,989.03/x
  3. Step 3: Cross multiply
    520,945.75x = 718,677.12 × 305,989.03
  4. Step 4: Simplify right side
    520,945.75x = 219,907,314,831.99
  5. Step 5: Solve for x
    x = 219,907,314,831.99/520,945.75
  6. Step 6: Final answer
    x = 422,130.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.