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Finding the Fourth Proportional to 665,573.76, 997,640.64 and 265,775.04

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Solution

The fourth proportional to 665,573.76, 997,640.64 and 265,775.04 is: 398,375.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,573.76 : 997,640.64 = 265,775.04 : x
  2. Step 2: Convert to fraction form
    665,573.76/997,640.64 = 265,775.04/x
  3. Step 3: Cross multiply
    665,573.76x = 997,640.64 × 265,775.04
  4. Step 4: Simplify right side
    665,573.76x = 265,147,981,001.63
  5. Step 5: Solve for x
    x = 265,147,981,001.63/665,573.76
  6. Step 6: Final answer
    x = 398,375.05

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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.