Home / 809,499,153.78-1,117,112,455.40-438,221,183.94

Finding the Fourth Proportional to 809,499,153.78, 1,117,112,455.40 and 438,221,183.94

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Solution

The fourth proportional to 809,499,153.78, 1,117,112,455.40 and 438,221,183.94 is: 604,747,195.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,499,153.78 : 1,117,112,455.40 = 438,221,183.94 : x
  2. Step 2: Convert to fraction form
    809,499,153.78/1,117,112,455.40 = 438,221,183.94/x
  3. Step 3: Cross multiply
    809,499,153.78x = 1,117,112,455.40 × 438,221,183.94
  4. Step 4: Simplify right side
    809,499,153.78x = 489,542,342,797,317,312
  5. Step 5: Solve for x
    x = 489,542,342,797,317,312/809,499,153.78
  6. Step 6: Final answer
    x = 604,747,195.24

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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.