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Finding the Fourth Proportional to 651,945.60, 978,153.30 and 292,086.90

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Solution

The fourth proportional to 651,945.60, 978,153.30 and 292,086.90 is: 438,235.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,945.60 : 978,153.30 = 292,086.90 : x
  2. Step 2: Convert to fraction form
    651,945.60/978,153.30 = 292,086.90/x
  3. Step 3: Cross multiply
    651,945.60x = 978,153.30 × 292,086.90
  4. Step 4: Simplify right side
    651,945.60x = 285,705,765,121.77
  5. Step 5: Solve for x
    x = 285,705,765,121.77/651,945.60
  6. Step 6: Final answer
    x = 438,235.59

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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.