Home / 639,738.84-959,609.49-166,423.44

Finding the Fourth Proportional to 639,738.84, 959,609.49 and 166,423.44

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Solution

The fourth proportional to 639,738.84, 959,609.49 and 166,423.44 is: 249,635.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,738.84 : 959,609.49 = 166,423.44 : x
  2. Step 2: Convert to fraction form
    639,738.84/959,609.49 = 166,423.44/x
  3. Step 3: Cross multiply
    639,738.84x = 959,609.49 × 166,423.44
  4. Step 4: Simplify right side
    639,738.84x = 159,701,512,382.45
  5. Step 5: Solve for x
    x = 159,701,512,382.45/639,738.84
  6. Step 6: Final answer
    x = 249,635.48

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Double scale
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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.