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Finding the Fourth Proportional to 466,639.20, 699,181.20 and 438,645.60

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Solution

The fourth proportional to 466,639.20, 699,181.20 and 438,645.60 is: 657,237.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    466,639.20 : 699,181.20 = 438,645.60 : x
  2. Step 2: Convert to fraction form
    466,639.20/699,181.20 = 438,645.60/x
  3. Step 3: Cross multiply
    466,639.20x = 699,181.20 × 438,645.60
  4. Step 4: Simplify right side
    466,639.20x = 306,692,756,982.72
  5. Step 5: Solve for x
    x = 306,692,756,982.72/466,639.20
  6. Step 6: Final answer
    x = 657,237.45

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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.