Home / 991,961.84-1,487,719.20-281,974.16

Finding the Fourth Proportional to 991,961.84, 1,487,719.20 and 281,974.16

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Solution

The fourth proportional to 991,961.84, 1,487,719.20 and 281,974.16 is: 422,897.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,961.84 : 1,487,719.20 = 281,974.16 : x
  2. Step 2: Convert to fraction form
    991,961.84/1,487,719.20 = 281,974.16/x
  3. Step 3: Cross multiply
    991,961.84x = 1,487,719.20 × 281,974.16
  4. Step 4: Simplify right side
    991,961.84x = 419,498,371,735.87
  5. Step 5: Solve for x
    x = 419,498,371,735.87/991,961.84
  6. Step 6: Final answer
    x = 422,897.69

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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.