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Finding the Fourth Proportional to 656,228.78, 905,623.61 and 365,840.29

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Solution

The fourth proportional to 656,228.78, 905,623.61 and 365,840.29 is: 504,875.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,228.78 : 905,623.61 = 365,840.29 : x
  2. Step 2: Convert to fraction form
    656,228.78/905,623.61 = 365,840.29/x
  3. Step 3: Cross multiply
    656,228.78x = 905,623.61 × 365,840.29
  4. Step 4: Simplify right side
    656,228.78x = 331,313,598,321.94
  5. Step 5: Solve for x
    x = 331,313,598,321.94/656,228.78
  6. Step 6: Final answer
    x = 504,875.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.