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Finding the Fourth Proportional to 653,052.78, 979,393.68 and 253,608.30

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Solution

The fourth proportional to 653,052.78, 979,393.68 and 253,608.30 is: 380,340.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,052.78 : 979,393.68 = 253,608.30 : x
  2. Step 2: Convert to fraction form
    653,052.78/979,393.68 = 253,608.30/x
  3. Step 3: Cross multiply
    653,052.78x = 979,393.68 × 253,608.30
  4. Step 4: Simplify right side
    653,052.78x = 248,382,366,215.54
  5. Step 5: Solve for x
    x = 248,382,366,215.54/653,052.78
  6. Step 6: Final answer
    x = 380,340.42

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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.