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Finding the Fourth Proportional to 693,749.63, 1,040,736.65 and 213,865.17

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Solution

The fourth proportional to 693,749.63, 1,040,736.65 and 213,865.17 is: 320,832.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,749.63 : 1,040,736.65 = 213,865.17 : x
  2. Step 2: Convert to fraction form
    693,749.63/1,040,736.65 = 213,865.17/x
  3. Step 3: Cross multiply
    693,749.63x = 1,040,736.65 × 213,865.17
  4. Step 4: Simplify right side
    693,749.63x = 222,577,316,987.60
  5. Step 5: Solve for x
    x = 222,577,316,987.60/693,749.63
  6. Step 6: Final answer
    x = 320,832.34

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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.