Home / 690,699.78-1,036,204.97-210,887.43

Finding the Fourth Proportional to 690,699.78, 1,036,204.97 and 210,887.43

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Solution

The fourth proportional to 690,699.78, 1,036,204.97 and 210,887.43 is: 316,378.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,699.78 : 1,036,204.97 = 210,887.43 : x
  2. Step 2: Convert to fraction form
    690,699.78/1,036,204.97 = 210,887.43/x
  3. Step 3: Cross multiply
    690,699.78x = 1,036,204.97 × 210,887.43
  4. Step 4: Simplify right side
    690,699.78x = 218,522,602,022.09
  5. Step 5: Solve for x
    x = 218,522,602,022.09/690,699.78
  6. Step 6: Final answer
    x = 316,378.56

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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.