Home / 1,213,980.40-1,821,189.30-504,080.20

Finding the Fourth Proportional to 1,213,980.40, 1,821,189.30 and 504,080.20

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Solution

The fourth proportional to 1,213,980.40, 1,821,189.30 and 504,080.20 is: 756,211.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,980.40 : 1,821,189.30 = 504,080.20 : x
  2. Step 2: Convert to fraction form
    1,213,980.40/1,821,189.30 = 504,080.20/x
  3. Step 3: Cross multiply
    1,213,980.40x = 1,821,189.30 × 504,080.20
  4. Step 4: Simplify right side
    1,213,980.40x = 918,025,466,581.86
  5. Step 5: Solve for x
    x = 918,025,466,581.86/1,213,980.40
  6. Step 6: Final answer
    x = 756,211.11

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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.