Home / 1,420,821.80-2,131,491.90-579,458.60

Finding the Fourth Proportional to 1,420,821.80, 2,131,491.90 and 579,458.60

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Solution

The fourth proportional to 1,420,821.80, 2,131,491.90 and 579,458.60 is: 869,293.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,821.80 : 2,131,491.90 = 579,458.60 : x
  2. Step 2: Convert to fraction form
    1,420,821.80/2,131,491.90 = 579,458.60/x
  3. Step 3: Cross multiply
    1,420,821.80x = 2,131,491.90 × 579,458.60
  4. Step 4: Simplify right side
    1,420,821.80x = 1,235,111,312,285.34
  5. Step 5: Solve for x
    x = 1,235,111,312,285.34/1,420,821.80
  6. Step 6: Final answer
    x = 869,293.61

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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.