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Finding the Fourth Proportional to 911,997.84, 1,367,258.84 and 379,918.56

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Solution

The fourth proportional to 911,997.84, 1,367,258.84 and 379,918.56 is: 569,570.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,997.84 : 1,367,258.84 = 379,918.56 : x
  2. Step 2: Convert to fraction form
    911,997.84/1,367,258.84 = 379,918.56/x
  3. Step 3: Cross multiply
    911,997.84x = 1,367,258.84 × 379,918.56
  4. Step 4: Simplify right side
    911,997.84x = 519,447,009,640.07
  5. Step 5: Solve for x
    x = 519,447,009,640.07/911,997.84
  6. Step 6: Final answer
    x = 569,570.44

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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.