Home / 1,212,991.20-1,819,486.80-314,425.80

Finding the Fourth Proportional to 1,212,991.20, 1,819,486.80 and 314,425.80

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Solution

The fourth proportional to 1,212,991.20, 1,819,486.80 and 314,425.80 is: 471,638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,991.20 : 1,819,486.80 = 314,425.80 : x
  2. Step 2: Convert to fraction form
    1,212,991.20/1,819,486.80 = 314,425.80/x
  3. Step 3: Cross multiply
    1,212,991.20x = 1,819,486.80 × 314,425.80
  4. Step 4: Simplify right side
    1,212,991.20x = 572,093,592,679.44
  5. Step 5: Solve for x
    x = 572,093,592,679.44/1,212,991.20
  6. Step 6: Final answer
    x = 471,638.70

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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.