Home / 685,666.81-1,029,163.61-330,930.55

Finding the Fourth Proportional to 685,666.81, 1,029,163.61 and 330,930.55

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Solution

The fourth proportional to 685,666.81, 1,029,163.61 and 330,930.55 is: 496,716.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,666.81 : 1,029,163.61 = 330,930.55 : x
  2. Step 2: Convert to fraction form
    685,666.81/1,029,163.61 = 330,930.55/x
  3. Step 3: Cross multiply
    685,666.81x = 1,029,163.61 × 330,930.55
  4. Step 4: Simplify right side
    685,666.81x = 340,581,679,497.29
  5. Step 5: Solve for x
    x = 340,581,679,497.29/685,666.81
  6. Step 6: Final answer
    x = 496,716.01

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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.