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Finding the Fourth Proportional to 509,482.40, 764,223.60 and 273,286.40

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Solution

The fourth proportional to 509,482.40, 764,223.60 and 273,286.40 is: 409,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,482.40 : 764,223.60 = 273,286.40 : x
  2. Step 2: Convert to fraction form
    509,482.40/764,223.60 = 273,286.40/x
  3. Step 3: Cross multiply
    509,482.40x = 764,223.60 × 273,286.40
  4. Step 4: Simplify right side
    509,482.40x = 208,851,916,439.04
  5. Step 5: Solve for x
    x = 208,851,916,439.04/509,482.40
  6. Step 6: Final answer
    x = 409,929.60

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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.