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Finding the Fourth Proportional to 828,603, 1,143,473.36 and 489,071.25

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Solution

The fourth proportional to 828,603, 1,143,473.36 and 489,071.25 is: 674,919.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,603 : 1,143,473.36 = 489,071.25 : x
  2. Step 2: Convert to fraction form
    828,603/1,143,473.36 = 489,071.25/x
  3. Step 3: Cross multiply
    828,603x = 1,143,473.36 × 489,071.25
  4. Step 4: Simplify right side
    828,603x = 559,239,943,071.54
  5. Step 5: Solve for x
    x = 559,239,943,071.54/828,603
  6. Step 6: Final answer
    x = 674,919.04

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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.