Home / 1,212,847.20-1,819,270.80-1,082,210.40

Finding the Fourth Proportional to 1,212,847.20, 1,819,270.80 and 1,082,210.40

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Solution

The fourth proportional to 1,212,847.20, 1,819,270.80 and 1,082,210.40 is: 1,623,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,847.20 : 1,819,270.80 = 1,082,210.40 : x
  2. Step 2: Convert to fraction form
    1,212,847.20/1,819,270.80 = 1,082,210.40/x
  3. Step 3: Cross multiply
    1,212,847.20x = 1,819,270.80 × 1,082,210.40
  4. Step 4: Simplify right side
    1,212,847.20x = 1,968,833,780,176.32
  5. Step 5: Solve for x
    x = 1,968,833,780,176.32/1,212,847.20
  6. Step 6: Final answer
    x = 1,623,315.60

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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.