Home / 885,772.40-1,328,399.40-317,087.60

Finding the Fourth Proportional to 885,772.40, 1,328,399.40 and 317,087.60

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Solution

The fourth proportional to 885,772.40, 1,328,399.40 and 317,087.60 is: 475,538.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,772.40 : 1,328,399.40 = 317,087.60 : x
  2. Step 2: Convert to fraction form
    885,772.40/1,328,399.40 = 317,087.60/x
  3. Step 3: Cross multiply
    885,772.40x = 1,328,399.40 × 317,087.60
  4. Step 4: Simplify right side
    885,772.40x = 421,218,977,587.44
  5. Step 5: Solve for x
    x = 421,218,977,587.44/885,772.40
  6. Step 6: Final answer
    x = 475,538.61

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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.