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Finding the Fourth Proportional to 653,135.76, 979,765.56 and 253,807.38

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Solution

The fourth proportional to 653,135.76, 979,765.56 and 253,807.38 is: 380,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,135.76 : 979,765.56 = 253,807.38 : x
  2. Step 2: Convert to fraction form
    653,135.76/979,765.56 = 253,807.38/x
  3. Step 3: Cross multiply
    653,135.76x = 979,765.56 × 253,807.38
  4. Step 4: Simplify right side
    653,135.76x = 248,671,729,797.83
  5. Step 5: Solve for x
    x = 248,671,729,797.83/653,135.76
  6. Step 6: Final answer
    x = 380,735.13

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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.