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Finding the Fourth Proportional to 890,476, 1,335,791.76 and 225,628

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Solution

The fourth proportional to 890,476, 1,335,791.76 and 225,628 is: 338,461.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,476 : 1,335,791.76 = 225,628 : x
  2. Step 2: Convert to fraction form
    890,476/1,335,791.76 = 225,628/x
  3. Step 3: Cross multiply
    890,476x = 1,335,791.76 × 225,628
  4. Step 4: Simplify right side
    890,476x = 301,392,023,225.28
  5. Step 5: Solve for x
    x = 301,392,023,225.28/890,476
  6. Step 6: Final answer
    x = 338,461.70

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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.