Home / 764,490,639.36-1,055,086,647.84-434,515,379.52

Finding the Fourth Proportional to 764,490,639.36, 1,055,086,647.84 and 434,515,379.52

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Solution

The fourth proportional to 764,490,639.36, 1,055,086,647.84 and 434,515,379.52 is: 599,682,130.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,490,639.36 : 1,055,086,647.84 = 434,515,379.52 : x
  2. Step 2: Convert to fraction form
    764,490,639.36/1,055,086,647.84 = 434,515,379.52/x
  3. Step 3: Cross multiply
    764,490,639.36x = 1,055,086,647.84 × 434,515,379.52
  4. Step 4: Simplify right side
    764,490,639.36x = 458,451,375,212,682,176
  5. Step 5: Solve for x
    x = 458,451,375,212,682,176/764,490,639.36
  6. Step 6: Final answer
    x = 599,682,130.31

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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.