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Finding the Fourth Proportional to 472,419.40, 708,629.10 and 320,860.30

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Solution

The fourth proportional to 472,419.40, 708,629.10 and 320,860.30 is: 481,290.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,419.40 : 708,629.10 = 320,860.30 : x
  2. Step 2: Convert to fraction form
    472,419.40/708,629.10 = 320,860.30/x
  3. Step 3: Cross multiply
    472,419.40x = 708,629.10 × 320,860.30
  4. Step 4: Simplify right side
    472,419.40x = 227,370,945,614.73
  5. Step 5: Solve for x
    x = 227,370,945,614.73/472,419.40
  6. Step 6: Final answer
    x = 481,290.45

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Similar ratio
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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.