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Finding the Fourth Proportional to 603,513, 903,891.29 and 288,191.34

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Solution

The fourth proportional to 603,513, 903,891.29 and 288,191.34 is: 431,628.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,513 : 903,891.29 = 288,191.34 : x
  2. Step 2: Convert to fraction form
    603,513/903,891.29 = 288,191.34/x
  3. Step 3: Cross multiply
    603,513x = 903,891.29 × 288,191.34
  4. Step 4: Simplify right side
    603,513x = 260,493,640,638.47
  5. Step 5: Solve for x
    x = 260,493,640,638.47/603,513
  6. Step 6: Final answer
    x = 431,628.88

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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.