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Finding the Fourth Proportional to 681,280,714.64, 940,166,665.08 and 368,014,879.28

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Solution

The fourth proportional to 681,280,714.64, 940,166,665.08 and 368,014,879.28 is: 507,860,143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,280,714.64 : 940,166,665.08 = 368,014,879.28 : x
  2. Step 2: Convert to fraction form
    681,280,714.64/940,166,665.08 = 368,014,879.28/x
  3. Step 3: Cross multiply
    681,280,714.64x = 940,166,665.08 × 368,014,879.28
  4. Step 4: Simplify right side
    681,280,714.64x = 345,995,321,752,496,384
  5. Step 5: Solve for x
    x = 345,995,321,752,496,384/681,280,714.64
  6. Step 6: Final answer
    x = 507,860,143.87

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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.