Home / 812,640,286.02-1,121,375,134.41-450,543,936.30

Finding the Fourth Proportional to 812,640,286.02, 1,121,375,134.41 and 450,543,936.30

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Solution

The fourth proportional to 812,640,286.02, 1,121,375,134.41 and 450,543,936.30 is: 621,712,676.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,640,286.02 : 1,121,375,134.41 = 450,543,936.30 : x
  2. Step 2: Convert to fraction form
    812,640,286.02/1,121,375,134.41 = 450,543,936.30/x
  3. Step 3: Cross multiply
    812,640,286.02x = 1,121,375,134.41 × 450,543,936.30
  4. Step 4: Simplify right side
    812,640,286.02x = 505,228,767,126,023,040
  5. Step 5: Solve for x
    x = 505,228,767,126,023,040/812,640,286.02
  6. Step 6: Final answer
    x = 621,712,676.34

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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.