Home / 685,274.40-1,028,057.40-212,007.60

Finding the Fourth Proportional to 685,274.40, 1,028,057.40 and 212,007.60

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Solution

The fourth proportional to 685,274.40, 1,028,057.40 and 212,007.60 is: 318,056.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,274.40 : 1,028,057.40 = 212,007.60 : x
  2. Step 2: Convert to fraction form
    685,274.40/1,028,057.40 = 212,007.60/x
  3. Step 3: Cross multiply
    685,274.40x = 1,028,057.40 × 212,007.60
  4. Step 4: Simplify right side
    685,274.40x = 217,955,982,036.24
  5. Step 5: Solve for x
    x = 217,955,982,036.24/685,274.40
  6. Step 6: Final answer
    x = 318,056.51

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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.