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Finding the Fourth Proportional to 640,801.44, 961,224.48 and 220,074.24

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Solution

The fourth proportional to 640,801.44, 961,224.48 and 220,074.24 is: 330,119.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,801.44 : 961,224.48 = 220,074.24 : x
  2. Step 2: Convert to fraction form
    640,801.44/961,224.48 = 220,074.24/x
  3. Step 3: Cross multiply
    640,801.44x = 961,224.48 × 220,074.24
  4. Step 4: Simplify right side
    640,801.44x = 211,540,746,905.40
  5. Step 5: Solve for x
    x = 211,540,746,905.40/640,801.44
  6. Step 6: Final answer
    x = 330,119.03

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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.