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Finding the Fourth Proportional to 669,175.20, 1,003,762.80 and 469,720.80

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Solution

The fourth proportional to 669,175.20, 1,003,762.80 and 469,720.80 is: 704,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,175.20 : 1,003,762.80 = 469,720.80 : x
  2. Step 2: Convert to fraction form
    669,175.20/1,003,762.80 = 469,720.80/x
  3. Step 3: Cross multiply
    669,175.20x = 1,003,762.80 × 469,720.80
  4. Step 4: Simplify right side
    669,175.20x = 471,488,265,426.24
  5. Step 5: Solve for x
    x = 471,488,265,426.24/669,175.20
  6. Step 6: Final answer
    x = 704,581.20

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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.