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Finding the Fourth Proportional to 675,936.03, 932,792.55 and 421,287

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Solution

The fourth proportional to 675,936.03, 932,792.55 and 421,287 is: 581,376.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,936.03 : 932,792.55 = 421,287 : x
  2. Step 2: Convert to fraction form
    675,936.03/932,792.55 = 421,287/x
  3. Step 3: Cross multiply
    675,936.03x = 932,792.55 × 421,287
  4. Step 4: Simplify right side
    675,936.03x = 392,973,375,011.85
  5. Step 5: Solve for x
    x = 392,973,375,011.85/675,936.03
  6. Step 6: Final answer
    x = 581,376.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.