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Finding the Fourth Proportional to 512,453.70, 768,680.55 and 302,328.90

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Solution

The fourth proportional to 512,453.70, 768,680.55 and 302,328.90 is: 453,493.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,453.70 : 768,680.55 = 302,328.90 : x
  2. Step 2: Convert to fraction form
    512,453.70/768,680.55 = 302,328.90/x
  3. Step 3: Cross multiply
    512,453.70x = 768,680.55 × 302,328.90
  4. Step 4: Simplify right side
    512,453.70x = 232,394,345,132.90
  5. Step 5: Solve for x
    x = 232,394,345,132.90/512,453.70
  6. Step 6: Final answer
    x = 453,493.35

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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.