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Finding the Fourth Proportional to 720,060.40, 1,080,090.60 and 449,455.60

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Solution

The fourth proportional to 720,060.40, 1,080,090.60 and 449,455.60 is: 674,183.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,060.40 : 1,080,090.60 = 449,455.60 : x
  2. Step 2: Convert to fraction form
    720,060.40/1,080,090.60 = 449,455.60/x
  3. Step 3: Cross multiply
    720,060.40x = 1,080,090.60 × 449,455.60
  4. Step 4: Simplify right side
    720,060.40x = 485,452,768,677.36
  5. Step 5: Solve for x
    x = 485,452,768,677.36/720,060.40
  6. Step 6: Final answer
    x = 674,183.40

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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.