Home / 781,778,395.78-1,172,666,603.37-199,512,654.39

Finding the Fourth Proportional to 781,778,395.78, 1,172,666,603.37 and 199,512,654.39

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Solution

The fourth proportional to 781,778,395.78, 1,172,666,603.37 and 199,512,654.39 is: 299,268,728.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,778,395.78 : 1,172,666,603.37 = 199,512,654.39 : x
  2. Step 2: Convert to fraction form
    781,778,395.78/1,172,666,603.37 = 199,512,654.39/x
  3. Step 3: Cross multiply
    781,778,395.78x = 1,172,666,603.37 × 199,512,654.39
  4. Step 4: Simplify right side
    781,778,395.78x = 233,961,826,753,592,192
  5. Step 5: Solve for x
    x = 233,961,826,753,592,192/781,778,395.78
  6. Step 6: Final answer
    x = 299,268,728.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.