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Finding the Fourth Proportional to 658,911.33, 987,237.57 and 442,364.49

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Solution

The fourth proportional to 658,911.33, 987,237.57 and 442,364.49 is: 662,788.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,911.33 : 987,237.57 = 442,364.49 : x
  2. Step 2: Convert to fraction form
    658,911.33/987,237.57 = 442,364.49/x
  3. Step 3: Cross multiply
    658,911.33x = 987,237.57 × 442,364.49
  4. Step 4: Simplify right side
    658,911.33x = 436,718,844,161.89
  5. Step 5: Solve for x
    x = 436,718,844,161.89/658,911.33
  6. Step 6: Final answer
    x = 662,788.49

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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.