Home / 721,916,682,391.55-996,268,913,740.40-396,767,499,277.60

Finding the Fourth Proportional to 721,916,682,391.55, 996,268,913,740.40 and 396,767,499,277.60

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Solution

The fourth proportional to 721,916,682,391.55, 996,268,913,740.40 and 396,767,499,277.60 is: 547,552,280,137.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,916,682,391.55 : 996,268,913,740.40 = 396,767,499,277.60 : x
  2. Step 2: Convert to fraction form
    721,916,682,391.55/996,268,913,740.40 = 396,767,499,277.60/x
  3. Step 3: Cross multiply
    721,916,682,391.55x = 996,268,913,740.40 × 396,767,499,277.60
  4. Step 4: Simplify right side
    721,916,682,391.55x = 395,287,125,512,789,451,341,824
  5. Step 5: Solve for x
    x = 395,287,125,512,789,451,341,824/721,916,682,391.55
  6. Step 6: Final answer
    x = 547,552,280,137.50

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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.