Home / 648,033.20-972,049.80-363,431.60

Finding the Fourth Proportional to 648,033.20, 972,049.80 and 363,431.60

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Solution

The fourth proportional to 648,033.20, 972,049.80 and 363,431.60 is: 545,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,033.20 : 972,049.80 = 363,431.60 : x
  2. Step 2: Convert to fraction form
    648,033.20/972,049.80 = 363,431.60/x
  3. Step 3: Cross multiply
    648,033.20x = 972,049.80 × 363,431.60
  4. Step 4: Simplify right side
    648,033.20x = 353,273,614,093.68
  5. Step 5: Solve for x
    x = 353,273,614,093.68/648,033.20
  6. Step 6: Final answer
    x = 545,147.40

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Double scale
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Similar ratio
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1.5x scale

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.