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Finding the Fourth Proportional to 508,330.40, 762,495.60 and 280,007.60

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Solution

The fourth proportional to 508,330.40, 762,495.60 and 280,007.60 is: 420,011.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,330.40 : 762,495.60 = 280,007.60 : x
  2. Step 2: Convert to fraction form
    508,330.40/762,495.60 = 280,007.60/x
  3. Step 3: Cross multiply
    508,330.40x = 762,495.60 × 280,007.60
  4. Step 4: Simplify right side
    508,330.40x = 213,504,562,966.56
  5. Step 5: Solve for x
    x = 213,504,562,966.56/508,330.40
  6. Step 6: Final answer
    x = 420,011.40

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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.