Home / 828,961.92-1,144,009.44-489,422.88

Finding the Fourth Proportional to 828,961.92, 1,144,009.44 and 489,422.88

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Solution

The fourth proportional to 828,961.92, 1,144,009.44 and 489,422.88 is: 675,428.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,961.92 : 1,144,009.44 = 489,422.88 : x
  2. Step 2: Convert to fraction form
    828,961.92/1,144,009.44 = 489,422.88/x
  3. Step 3: Cross multiply
    828,961.92x = 1,144,009.44 × 489,422.88
  4. Step 4: Simplify right side
    828,961.92x = 559,904,394,871.99
  5. Step 5: Solve for x
    x = 559,904,394,871.99/828,961.92
  6. Step 6: Final answer
    x = 675,428.37

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Double scale
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1.5x scale

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.