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Finding the Fourth Proportional to 660,296.38, 990,257.73 and 300,265.86

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Solution

The fourth proportional to 660,296.38, 990,257.73 and 300,265.86 is: 450,313.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,296.38 : 990,257.73 = 300,265.86 : x
  2. Step 2: Convert to fraction form
    660,296.38/990,257.73 = 300,265.86/x
  3. Step 3: Cross multiply
    660,296.38x = 990,257.73 × 300,265.86
  4. Step 4: Simplify right side
    660,296.38x = 297,340,589,566.97
  5. Step 5: Solve for x
    x = 297,340,589,566.97/660,296.38
  6. Step 6: Final answer
    x = 450,313.83

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1.5x scale

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.