Home / 1,419,985.20-2,131,187.40-579,140.40

Finding the Fourth Proportional to 1,419,985.20, 2,131,187.40 and 579,140.40

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Solution

The fourth proportional to 1,419,985.20, 2,131,187.40 and 579,140.40 is: 869,203.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,985.20 : 2,131,187.40 = 579,140.40 : x
  2. Step 2: Convert to fraction form
    1,419,985.20/2,131,187.40 = 579,140.40/x
  3. Step 3: Cross multiply
    1,419,985.20x = 2,131,187.40 × 579,140.40
  4. Step 4: Simplify right side
    1,419,985.20x = 1,234,256,723,310.96
  5. Step 5: Solve for x
    x = 1,234,256,723,310.96/1,419,985.20
  6. Step 6: Final answer
    x = 869,203.93

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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.