Home / 812,517,564.74-1,218,392,147.57-314,761,214.97

Finding the Fourth Proportional to 812,517,564.74, 1,218,392,147.57 and 314,761,214.97

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Solution

The fourth proportional to 812,517,564.74, 1,218,392,147.57 and 314,761,214.97 is: 471,992,987.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,517,564.74 : 1,218,392,147.57 = 314,761,214.97 : x
  2. Step 2: Convert to fraction form
    812,517,564.74/1,218,392,147.57 = 314,761,214.97/x
  3. Step 3: Cross multiply
    812,517,564.74x = 1,218,392,147.57 × 314,761,214.97
  4. Step 4: Simplify right side
    812,517,564.74x = 383,502,592,677,467,008
  5. Step 5: Solve for x
    x = 383,502,592,677,467,008/812,517,564.74
  6. Step 6: Final answer
    x = 471,992,987.38

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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.