Home / 685,691.56-1,029,200.76-330,955.36

Finding the Fourth Proportional to 685,691.56, 1,029,200.76 and 330,955.36

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Solution

The fourth proportional to 685,691.56, 1,029,200.76 and 330,955.36 is: 496,753.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,691.56 : 1,029,200.76 = 330,955.36 : x
  2. Step 2: Convert to fraction form
    685,691.56/1,029,200.76 = 330,955.36/x
  3. Step 3: Cross multiply
    685,691.56x = 1,029,200.76 × 330,955.36
  4. Step 4: Simplify right side
    685,691.56x = 340,619,508,038.07
  5. Step 5: Solve for x
    x = 340,619,508,038.07/685,691.56
  6. Step 6: Final answer
    x = 496,753.25

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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.