Home / 406,981,662.21-561,634,970.40-228,340,889.64

Finding the Fourth Proportional to 406,981,662.21, 561,634,970.40 and 228,340,889.64

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Solution

The fourth proportional to 406,981,662.21, 561,634,970.40 and 228,340,889.64 is: 315,110,582.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,981,662.21 : 561,634,970.40 = 228,340,889.64 : x
  2. Step 2: Convert to fraction form
    406,981,662.21/561,634,970.40 = 228,340,889.64/x
  3. Step 3: Cross multiply
    406,981,662.21x = 561,634,970.40 × 228,340,889.64
  4. Step 4: Simplify right side
    406,981,662.21x = 128,244,228,794,071,056
  5. Step 5: Solve for x
    x = 128,244,228,794,071,056/406,981,662.21
  6. Step 6: Final answer
    x = 315,110,582.86

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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.