Home / 1,212,078.40-1,820,085.90-814,481.80

Finding the Fourth Proportional to 1,212,078.40, 1,820,085.90 and 814,481.80

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Solution

The fourth proportional to 1,212,078.40, 1,820,085.90 and 814,481.80 is: 1,223,045.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,078.40 : 1,820,085.90 = 814,481.80 : x
  2. Step 2: Convert to fraction form
    1,212,078.40/1,820,085.90 = 814,481.80/x
  3. Step 3: Cross multiply
    1,212,078.40x = 1,820,085.90 × 814,481.80
  4. Step 4: Simplify right side
    1,212,078.40x = 1,482,426,839,986.62
  5. Step 5: Solve for x
    x = 1,482,426,839,986.62/1,212,078.40
  6. Step 6: Final answer
    x = 1,223,045.34

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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.