Home / 728,137.80-1,091,915.10-254,579.40

Finding the Fourth Proportional to 728,137.80, 1,091,915.10 and 254,579.40

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Solution

The fourth proportional to 728,137.80, 1,091,915.10 and 254,579.40 is: 381,767.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,137.80 : 1,091,915.10 = 254,579.40 : x
  2. Step 2: Convert to fraction form
    728,137.80/1,091,915.10 = 254,579.40/x
  3. Step 3: Cross multiply
    728,137.80x = 1,091,915.10 × 254,579.40
  4. Step 4: Simplify right side
    728,137.80x = 277,979,091,008.94
  5. Step 5: Solve for x
    x = 277,979,091,008.94/728,137.80
  6. Step 6: Final answer
    x = 381,767.15

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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.