Home / 812,740,327.31-1,121,674,695.11-455,604,562.76

Finding the Fourth Proportional to 812,740,327.31, 1,121,674,695.11 and 455,604,562.76

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Solution

The fourth proportional to 812,740,327.31, 1,121,674,695.11 and 455,604,562.76 is: 628,786,454.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,740,327.31 : 1,121,674,695.11 = 455,604,562.76 : x
  2. Step 2: Convert to fraction form
    812,740,327.31/1,121,674,695.11 = 455,604,562.76/x
  3. Step 3: Cross multiply
    812,740,327.31x = 1,121,674,695.11 × 455,604,562.76
  4. Step 4: Simplify right side
    812,740,327.31x = 511,040,109,022,269,824
  5. Step 5: Solve for x
    x = 511,040,109,022,269,824/812,740,327.31
  6. Step 6: Final answer
    x = 628,786,454.73

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1.5x scale

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.