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Finding the Fourth Proportional to 512,658.60, 768,987.90 and 246,938.10

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Solution

The fourth proportional to 512,658.60, 768,987.90 and 246,938.10 is: 370,407.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,658.60 : 768,987.90 = 246,938.10 : x
  2. Step 2: Convert to fraction form
    512,658.60/768,987.90 = 246,938.10/x
  3. Step 3: Cross multiply
    512,658.60x = 768,987.90 × 246,938.10
  4. Step 4: Simplify right side
    512,658.60x = 189,892,410,948.99
  5. Step 5: Solve for x
    x = 189,892,410,948.99/512,658.60
  6. Step 6: Final answer
    x = 370,407.15

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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.