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Finding the Fourth Proportional to 465,621.20, 699,468.60 and 446,728.40

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Solution

The fourth proportional to 465,621.20, 699,468.60 and 446,728.40 is: 671,087.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,621.20 : 699,468.60 = 446,728.40 : x
  2. Step 2: Convert to fraction form
    465,621.20/699,468.60 = 446,728.40/x
  3. Step 3: Cross multiply
    465,621.20x = 699,468.60 × 446,728.40
  4. Step 4: Simplify right side
    465,621.20x = 312,472,488,528.24
  5. Step 5: Solve for x
    x = 312,472,488,528.24/465,621.20
  6. Step 6: Final answer
    x = 671,087.33

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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.