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Finding the Fourth Proportional to 669,676.80, 1,004,515.20 and 403,737.60

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Solution

The fourth proportional to 669,676.80, 1,004,515.20 and 403,737.60 is: 605,606.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,676.80 : 1,004,515.20 = 403,737.60 : x
  2. Step 2: Convert to fraction form
    669,676.80/1,004,515.20 = 403,737.60/x
  3. Step 3: Cross multiply
    669,676.80x = 1,004,515.20 × 403,737.60
  4. Step 4: Simplify right side
    669,676.80x = 405,560,556,011.52
  5. Step 5: Solve for x
    x = 405,560,556,011.52/669,676.80
  6. Step 6: Final answer
    x = 605,606.40

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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.