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Finding the Fourth Proportional to 640,173.44, 883,364.04 and 353,676.44

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Solution

The fourth proportional to 640,173.44, 883,364.04 and 353,676.44 is: 488,031.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,173.44 : 883,364.04 = 353,676.44 : x
  2. Step 2: Convert to fraction form
    640,173.44/883,364.04 = 353,676.44/x
  3. Step 3: Cross multiply
    640,173.44x = 883,364.04 × 353,676.44
  4. Step 4: Simplify right side
    640,173.44x = 312,425,048,891.22
  5. Step 5: Solve for x
    x = 312,425,048,891.22/640,173.44
  6. Step 6: Final answer
    x = 488,031.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.