Home / 1,214,098.20-1,821,147.30-415,405.80

Finding the Fourth Proportional to 1,214,098.20, 1,821,147.30 and 415,405.80

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Solution

The fourth proportional to 1,214,098.20, 1,821,147.30 and 415,405.80 is: 623,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,098.20 : 1,821,147.30 = 415,405.80 : x
  2. Step 2: Convert to fraction form
    1,214,098.20/1,821,147.30 = 415,405.80/x
  3. Step 3: Cross multiply
    1,214,098.20x = 1,821,147.30 × 415,405.80
  4. Step 4: Simplify right side
    1,214,098.20x = 756,515,151,074.34
  5. Step 5: Solve for x
    x = 756,515,151,074.34/1,214,098.20
  6. Step 6: Final answer
    x = 623,108.70

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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.