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Finding the Fourth Proportional to 647,819.20, 970,416.60 and 367,008.40

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Solution

The fourth proportional to 647,819.20, 970,416.60 and 367,008.40 is: 549,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,819.20 : 970,416.60 = 367,008.40 : x
  2. Step 2: Convert to fraction form
    647,819.20/970,416.60 = 367,008.40/x
  3. Step 3: Cross multiply
    647,819.20x = 970,416.60 × 367,008.40
  4. Step 4: Simplify right side
    647,819.20x = 356,151,043,699.44
  5. Step 5: Solve for x
    x = 356,151,043,699.44/647,819.20
  6. Step 6: Final answer
    x = 549,769.20

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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.