Home / 726,995.81-1,089,988.73-321,967.31

Finding the Fourth Proportional to 726,995.81, 1,089,988.73 and 321,967.31

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Solution

The fourth proportional to 726,995.81, 1,089,988.73 and 321,967.31 is: 482,727.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,995.81 : 1,089,988.73 = 321,967.31 : x
  2. Step 2: Convert to fraction form
    726,995.81/1,089,988.73 = 321,967.31/x
  3. Step 3: Cross multiply
    726,995.81x = 1,089,988.73 × 321,967.31
  4. Step 4: Simplify right side
    726,995.81x = 350,940,742,858.31
  5. Step 5: Solve for x
    x = 350,940,742,858.31/726,995.81
  6. Step 6: Final answer
    x = 482,727.32

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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.