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Finding the Fourth Proportional to 668,449.20, 1,003,300.20 and 353,132.40

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Solution

The fourth proportional to 668,449.20, 1,003,300.20 and 353,132.40 is: 530,029.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,449.20 : 1,003,300.20 = 353,132.40 : x
  2. Step 2: Convert to fraction form
    668,449.20/1,003,300.20 = 353,132.40/x
  3. Step 3: Cross multiply
    668,449.20x = 1,003,300.20 × 353,132.40
  4. Step 4: Simplify right side
    668,449.20x = 354,297,807,546.48
  5. Step 5: Solve for x
    x = 354,297,807,546.48/668,449.20
  6. Step 6: Final answer
    x = 530,029.52

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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.