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Finding the Fourth Proportional to 669,609.60, 1,004,414.40 and 613,622.40

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Solution

The fourth proportional to 669,609.60, 1,004,414.40 and 613,622.40 is: 920,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,609.60 : 1,004,414.40 = 613,622.40 : x
  2. Step 2: Convert to fraction form
    669,609.60/1,004,414.40 = 613,622.40/x
  3. Step 3: Cross multiply
    669,609.60x = 1,004,414.40 × 613,622.40
  4. Step 4: Simplify right side
    669,609.60x = 616,331,174,722.56
  5. Step 5: Solve for x
    x = 616,331,174,722.56/669,609.60
  6. Step 6: Final answer
    x = 920,433.60

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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.