Home / 812,515,115.43-1,121,614,134.75-548,554,669.29

Finding the Fourth Proportional to 812,515,115.43, 1,121,614,134.75 and 548,554,669.29

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Solution

The fourth proportional to 812,515,115.43, 1,121,614,134.75 and 548,554,669.29 is: 757,237,199.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,515,115.43 : 1,121,614,134.75 = 548,554,669.29 : x
  2. Step 2: Convert to fraction form
    812,515,115.43/1,121,614,134.75 = 548,554,669.29/x
  3. Step 3: Cross multiply
    812,515,115.43x = 1,121,614,134.75 × 548,554,669.29
  4. Step 4: Simplify right side
    812,515,115.43x = 615,266,670,758,775,680
  5. Step 5: Solve for x
    x = 615,266,670,758,775,680/812,515,115.43
  6. Step 6: Final answer
    x = 757,237,199.75

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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.