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Finding the Fourth Proportional to 666,824, 1,000,236 and 199,880

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Solution

The fourth proportional to 666,824, 1,000,236 and 199,880 is: 299,820

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,824 : 1,000,236 = 199,880 : x
  2. Step 2: Convert to fraction form
    666,824/1,000,236 = 199,880/x
  3. Step 3: Cross multiply
    666,824x = 1,000,236 × 199,880
  4. Step 4: Simplify right side
    666,824x = 199,927,171,680
  5. Step 5: Solve for x
    x = 199,927,171,680/666,824
  6. Step 6: Final answer
    x = 299,820

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.