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Finding the Fourth Proportional to 924,724, 1,387,086 and 259,876

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Solution

The fourth proportional to 924,724, 1,387,086 and 259,876 is: 389,814

Step by Step Solution

  1. Step 1: Write the proportion equation
    924,724 : 1,387,086 = 259,876 : x
  2. Step 2: Convert to fraction form
    924,724/1,387,086 = 259,876/x
  3. Step 3: Cross multiply
    924,724x = 1,387,086 × 259,876
  4. Step 4: Simplify right side
    924,724x = 360,470,361,336
  5. Step 5: Solve for x
    x = 360,470,361,336/924,724
  6. Step 6: Final answer
    x = 389,814

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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.