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Finding the Fourth Proportional to 669,857.60, 1,004,770.20 and 403,416.20

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Solution

The fourth proportional to 669,857.60, 1,004,770.20 and 403,416.20 is: 605,114.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,857.60 : 1,004,770.20 = 403,416.20 : x
  2. Step 2: Convert to fraction form
    669,857.60/1,004,770.20 = 403,416.20/x
  3. Step 3: Cross multiply
    669,857.60x = 1,004,770.20 × 403,416.20
  4. Step 4: Simplify right side
    669,857.60x = 405,340,575,957.24
  5. Step 5: Solve for x
    x = 405,340,575,957.24/669,857.60
  6. Step 6: Final answer
    x = 605,114.54

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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.