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Finding the Fourth Proportional to 654,665.45, 980,721.62 and 369,493.43

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Solution

The fourth proportional to 654,665.45, 980,721.62 and 369,493.43 is: 553,519.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,665.45 : 980,721.62 = 369,493.43 : x
  2. Step 2: Convert to fraction form
    654,665.45/980,721.62 = 369,493.43/x
  3. Step 3: Cross multiply
    654,665.45x = 980,721.62 × 369,493.43
  4. Step 4: Simplify right side
    654,665.45x = 362,370,193,401.49
  5. Step 5: Solve for x
    x = 362,370,193,401.49/654,665.45
  6. Step 6: Final answer
    x = 553,519.65

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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.