Home / 540,481,861,172.43-745,815,669,324.80-320,712,678,272.61

Finding the Fourth Proportional to 540,481,861,172.43, 745,815,669,324.80 and 320,712,678,272.61

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Solution

The fourth proportional to 540,481,861,172.43, 745,815,669,324.80 and 320,712,678,272.61 is: 442,554,242,778.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,481,861,172.43 : 745,815,669,324.80 = 320,712,678,272.61 : x
  2. Step 2: Convert to fraction form
    540,481,861,172.43/745,815,669,324.80 = 320,712,678,272.61/x
  3. Step 3: Cross multiply
    540,481,861,172.43x = 745,815,669,324.80 × 320,712,678,272.61
  4. Step 4: Simplify right side
    540,481,861,172.43x = 239,192,540,806,835,861,454,848
  5. Step 5: Solve for x
    x = 239,192,540,806,835,861,454,848/540,481,861,172.43
  6. Step 6: Final answer
    x = 442,554,242,778.79

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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.