Home / 721,916,682,392.56-996,268,913,741.78-396,767,499,278.60

Finding the Fourth Proportional to 721,916,682,392.56, 996,268,913,741.78 and 396,767,499,278.60

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Solution

The fourth proportional to 721,916,682,392.56, 996,268,913,741.78 and 396,767,499,278.60 is: 547,552,280,138.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,916,682,392.56 : 996,268,913,741.78 = 396,767,499,278.60 : x
  2. Step 2: Convert to fraction form
    721,916,682,392.56/996,268,913,741.78 = 396,767,499,278.60/x
  3. Step 3: Cross multiply
    721,916,682,392.56x = 996,268,913,741.78 × 396,767,499,278.60
  4. Step 4: Simplify right side
    721,916,682,392.56x = 395,287,125,514,333,290,758,144
  5. Step 5: Solve for x
    x = 395,287,125,514,333,290,758,144/721,916,682,392.56
  6. Step 6: Final answer
    x = 547,552,280,138.87

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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.