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Finding the Fourth Proportional to 899,679.12, 1,349,078.04 and 300,434.64

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Solution

The fourth proportional to 899,679.12, 1,349,078.04 and 300,434.64 is: 450,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,679.12 : 1,349,078.04 = 300,434.64 : x
  2. Step 2: Convert to fraction form
    899,679.12/1,349,078.04 = 300,434.64/x
  3. Step 3: Cross multiply
    899,679.12x = 1,349,078.04 × 300,434.64
  4. Step 4: Simplify right side
    899,679.12x = 405,309,775,279.31
  5. Step 5: Solve for x
    x = 405,309,775,279.31/899,679.12
  6. Step 6: Final answer
    x = 450,504.81

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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.