Home / 685,281.80-1,025,954.40-419,561.30

Finding the Fourth Proportional to 685,281.80, 1,025,954.40 and 419,561.30

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Solution

The fourth proportional to 685,281.80, 1,025,954.40 and 419,561.30 is: 628,136.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,281.80 : 1,025,954.40 = 419,561.30 : x
  2. Step 2: Convert to fraction form
    685,281.80/1,025,954.40 = 419,561.30/x
  3. Step 3: Cross multiply
    685,281.80x = 1,025,954.40 × 419,561.30
  4. Step 4: Simplify right side
    685,281.80x = 430,450,761,804.72
  5. Step 5: Solve for x
    x = 430,450,761,804.72/685,281.80
  6. Step 6: Final answer
    x = 628,136.87

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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.