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Finding the Fourth Proportional to 426,508,902, 639,763,353 and 103,392,774

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Solution

The fourth proportional to 426,508,902, 639,763,353 and 103,392,774 is: 155,089,161

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,508,902 : 639,763,353 = 103,392,774 : x
  2. Step 2: Convert to fraction form
    426,508,902/639,763,353 = 103,392,774/x
  3. Step 3: Cross multiply
    426,508,902x = 639,763,353 × 103,392,774
  4. Step 4: Simplify right side
    426,508,902x = 66,146,907,770,211,224
  5. Step 5: Solve for x
    x = 66,146,907,770,211,224/426,508,902
  6. Step 6: Final answer
    x = 155,089,161

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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.