Home / 812,740,357.12-1,121,674,736.20-455,604,592.56

Finding the Fourth Proportional to 812,740,357.12, 1,121,674,736.20 and 455,604,592.56

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Solution

The fourth proportional to 812,740,357.12, 1,121,674,736.20 and 455,604,592.56 is: 628,786,495.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,740,357.12 : 1,121,674,736.20 = 455,604,592.56 : x
  2. Step 2: Convert to fraction form
    812,740,357.12/1,121,674,736.20 = 455,604,592.56/x
  3. Step 3: Cross multiply
    812,740,357.12x = 1,121,674,736.20 × 455,604,592.56
  4. Step 4: Simplify right side
    812,740,357.12x = 511,040,161,171,246,528
  5. Step 5: Solve for x
    x = 511,040,161,171,246,528/812,740,357.12
  6. Step 6: Final answer
    x = 628,786,495.83

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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.