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Finding the Fourth Proportional to 665,174.40, 996,667.20 and 384,201.60

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Solution

The fourth proportional to 665,174.40, 996,667.20 and 384,201.60 is: 575,670.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,174.40 : 996,667.20 = 384,201.60 : x
  2. Step 2: Convert to fraction form
    665,174.40/996,667.20 = 384,201.60/x
  3. Step 3: Cross multiply
    665,174.40x = 996,667.20 × 384,201.60
  4. Step 4: Simplify right side
    665,174.40x = 382,921,132,907.52
  5. Step 5: Solve for x
    x = 382,921,132,907.52/665,174.40
  6. Step 6: Final answer
    x = 575,670.28

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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.