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Finding the Fourth Proportional to 653,090.62, 980,009.70 and 253,679.72

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Solution

The fourth proportional to 653,090.62, 980,009.70 and 253,679.72 is: 380,664.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,090.62 : 980,009.70 = 253,679.72 : x
  2. Step 2: Convert to fraction form
    653,090.62/980,009.70 = 253,679.72/x
  3. Step 3: Cross multiply
    653,090.62x = 980,009.70 × 253,679.72
  4. Step 4: Simplify right side
    653,090.62x = 248,608,586,293.28
  5. Step 5: Solve for x
    x = 248,608,586,293.28/653,090.62
  6. Step 6: Final answer
    x = 380,664.76

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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.