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Finding the Fourth Proportional to 509,338.60, 764,007.90 and 501,465.40

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Solution

The fourth proportional to 509,338.60, 764,007.90 and 501,465.40 is: 752,198.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,338.60 : 764,007.90 = 501,465.40 : x
  2. Step 2: Convert to fraction form
    509,338.60/764,007.90 = 501,465.40/x
  3. Step 3: Cross multiply
    509,338.60x = 764,007.90 × 501,465.40
  4. Step 4: Simplify right side
    509,338.60x = 383,123,527,176.66
  5. Step 5: Solve for x
    x = 383,123,527,176.66/509,338.60
  6. Step 6: Final answer
    x = 752,198.10

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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.