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Finding the Fourth Proportional to 509,364.60, 764,046.90 and 454,252.20

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Solution

The fourth proportional to 509,364.60, 764,046.90 and 454,252.20 is: 681,378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,364.60 : 764,046.90 = 454,252.20 : x
  2. Step 2: Convert to fraction form
    509,364.60/764,046.90 = 454,252.20/x
  3. Step 3: Cross multiply
    509,364.60x = 764,046.90 × 454,252.20
  4. Step 4: Simplify right side
    509,364.60x = 347,069,985,228.18
  5. Step 5: Solve for x
    x = 347,069,985,228.18/509,364.60
  6. Step 6: Final answer
    x = 681,378.30

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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.