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Finding the Fourth Proportional to 924,715, 1,387,072.50 and 259,867

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Solution

The fourth proportional to 924,715, 1,387,072.50 and 259,867 is: 389,800.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    924,715 : 1,387,072.50 = 259,867 : x
  2. Step 2: Convert to fraction form
    924,715/1,387,072.50 = 259,867/x
  3. Step 3: Cross multiply
    924,715x = 1,387,072.50 × 259,867
  4. Step 4: Simplify right side
    924,715x = 360,454,369,357.50
  5. Step 5: Solve for x
    x = 360,454,369,357.50/924,715
  6. Step 6: Final answer
    x = 389,800.50

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1.5x scale

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.