Home / 669,423.60-1,004,135.40-404,002.80

Finding the Fourth Proportional to 669,423.60, 1,004,135.40 and 404,002.80

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Solution

The fourth proportional to 669,423.60, 1,004,135.40 and 404,002.80 is: 606,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,423.60 : 1,004,135.40 = 404,002.80 : x
  2. Step 2: Convert to fraction form
    669,423.60/1,004,135.40 = 404,002.80/x
  3. Step 3: Cross multiply
    669,423.60x = 1,004,135.40 × 404,002.80
  4. Step 4: Simplify right side
    669,423.60x = 405,673,513,179.12
  5. Step 5: Solve for x
    x = 405,673,513,179.12/669,423.60
  6. Step 6: Final answer
    x = 606,004.20

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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.