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Finding the Fourth Proportional to 509,964.40, 764,946.60 and 342,002.80

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Solution

The fourth proportional to 509,964.40, 764,946.60 and 342,002.80 is: 513,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,964.40 : 764,946.60 = 342,002.80 : x
  2. Step 2: Convert to fraction form
    509,964.40/764,946.60 = 342,002.80/x
  3. Step 3: Cross multiply
    509,964.40x = 764,946.60 × 342,002.80
  4. Step 4: Simplify right side
    509,964.40x = 261,613,879,050.48
  5. Step 5: Solve for x
    x = 261,613,879,050.48/509,964.40
  6. Step 6: Final answer
    x = 513,004.20

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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.