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Finding the Fourth Proportional to 891,747, 1,230,610.86 and 489,364.92

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Solution

The fourth proportional to 891,747, 1,230,610.86 and 489,364.92 is: 675,323.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,747 : 1,230,610.86 = 489,364.92 : x
  2. Step 2: Convert to fraction form
    891,747/1,230,610.86 = 489,364.92/x
  3. Step 3: Cross multiply
    891,747x = 1,230,610.86 × 489,364.92
  4. Step 4: Simplify right side
    891,747x = 602,217,785,055.03
  5. Step 5: Solve for x
    x = 602,217,785,055.03/891,747
  6. Step 6: Final answer
    x = 675,323.59

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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.