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Finding the Fourth Proportional to 720,291.22, 1,080,436.86 and 246,980.68

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Solution

The fourth proportional to 720,291.22, 1,080,436.86 and 246,980.68 is: 370,471.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,291.22 : 1,080,436.86 = 246,980.68 : x
  2. Step 2: Convert to fraction form
    720,291.22/1,080,436.86 = 246,980.68/x
  3. Step 3: Cross multiply
    720,291.22x = 1,080,436.86 × 246,980.68
  4. Step 4: Simplify right side
    720,291.22x = 266,847,027,678.77
  5. Step 5: Solve for x
    x = 266,847,027,678.77/720,291.22
  6. Step 6: Final answer
    x = 370,471.03

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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.