Home / 1,229,378.82-1,696,563.72-678,157.80

Finding the Fourth Proportional to 1,229,378.82, 1,696,563.72 and 678,157.80

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Solution

The fourth proportional to 1,229,378.82, 1,696,563.72 and 678,157.80 is: 935,869.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,378.82 : 1,696,563.72 = 678,157.80 : x
  2. Step 2: Convert to fraction form
    1,229,378.82/1,696,563.72 = 678,157.80/x
  3. Step 3: Cross multiply
    1,229,378.82x = 1,696,563.72 × 678,157.80
  4. Step 4: Simplify right side
    1,229,378.82x = 1,150,537,919,915.02
  5. Step 5: Solve for x
    x = 1,150,537,919,915.02/1,229,378.82
  6. Step 6: Final answer
    x = 935,869.32

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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.