Home / 639,865,383.75-882,764,233.47-371,896,691.49

Finding the Fourth Proportional to 639,865,383.75, 882,764,233.47 and 371,896,691.49

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Solution

The fourth proportional to 639,865,383.75, 882,764,233.47 and 371,896,691.49 is: 513,072,133.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,865,383.75 : 882,764,233.47 = 371,896,691.49 : x
  2. Step 2: Convert to fraction form
    639,865,383.75/882,764,233.47 = 371,896,691.49/x
  3. Step 3: Cross multiply
    639,865,383.75x = 882,764,233.47 × 371,896,691.49
  4. Step 4: Simplify right side
    639,865,383.75x = 328,297,097,793,198,912
  5. Step 5: Solve for x
    x = 328,297,097,793,198,912/639,865,383.75
  6. Step 6: Final answer
    x = 513,072,133.81

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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.