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Finding the Fourth Proportional to 454,380.40, 681,570.60 and 312,662.80

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Solution

The fourth proportional to 454,380.40, 681,570.60 and 312,662.80 is: 468,994.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,380.40 : 681,570.60 = 312,662.80 : x
  2. Step 2: Convert to fraction form
    454,380.40/681,570.60 = 312,662.80/x
  3. Step 3: Cross multiply
    454,380.40x = 681,570.60 × 312,662.80
  4. Step 4: Simplify right side
    454,380.40x = 213,101,772,193.68
  5. Step 5: Solve for x
    x = 213,101,772,193.68/454,380.40
  6. Step 6: Final answer
    x = 468,994.20

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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.