Home / 721,916,682,388.40-996,268,913,735.88-396,767,499,274.36

Finding the Fourth Proportional to 721,916,682,388.40, 996,268,913,735.88 and 396,767,499,274.36

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Solution

The fourth proportional to 721,916,682,388.40, 996,268,913,735.88 and 396,767,499,274.36 is: 547,552,280,132.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,916,682,388.40 : 996,268,913,735.88 = 396,767,499,274.36 : x
  2. Step 2: Convert to fraction form
    721,916,682,388.40/996,268,913,735.88 = 396,767,499,274.36/x
  3. Step 3: Cross multiply
    721,916,682,388.40x = 996,268,913,735.88 × 396,767,499,274.36
  4. Step 4: Simplify right side
    721,916,682,388.40x = 395,287,125,507,768,164,810,752
  5. Step 5: Solve for x
    x = 395,287,125,507,768,164,810,752/721,916,682,388.40
  6. Step 6: Final answer
    x = 547,552,280,132.93

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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.