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Finding the Fourth Proportional to 656,999.90, 985,269.45 and 341,351.90

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Solution

The fourth proportional to 656,999.90, 985,269.45 and 341,351.90 is: 511,908.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,999.90 : 985,269.45 = 341,351.90 : x
  2. Step 2: Convert to fraction form
    656,999.90/985,269.45 = 341,351.90/x
  3. Step 3: Cross multiply
    656,999.90x = 985,269.45 × 341,351.90
  4. Step 4: Simplify right side
    656,999.90x = 336,323,598,769.46
  5. Step 5: Solve for x
    x = 336,323,598,769.46/656,999.90
  6. Step 6: Final answer
    x = 511,908.14

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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.