Home / 1,222,379.70-1,686,704.04-678,519.60

Finding the Fourth Proportional to 1,222,379.70, 1,686,704.04 and 678,519.60

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Solution

The fourth proportional to 1,222,379.70, 1,686,704.04 and 678,519.60 is: 936,257.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,379.70 : 1,686,704.04 = 678,519.60 : x
  2. Step 2: Convert to fraction form
    1,222,379.70/1,686,704.04 = 678,519.60/x
  3. Step 3: Cross multiply
    1,222,379.70x = 1,686,704.04 × 678,519.60
  4. Step 4: Simplify right side
    1,222,379.70x = 1,144,461,750,539.18
  5. Step 5: Solve for x
    x = 1,144,461,750,539.18/1,222,379.70
  6. Step 6: Final answer
    x = 936,257.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.