Home / 1,214,020.80-1,821,031.20-415,036.80

Finding the Fourth Proportional to 1,214,020.80, 1,821,031.20 and 415,036.80

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Solution

The fourth proportional to 1,214,020.80, 1,821,031.20 and 415,036.80 is: 622,555.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,020.80 : 1,821,031.20 = 415,036.80 : x
  2. Step 2: Convert to fraction form
    1,214,020.80/1,821,031.20 = 415,036.80/x
  3. Step 3: Cross multiply
    1,214,020.80x = 1,821,031.20 × 415,036.80
  4. Step 4: Simplify right side
    1,214,020.80x = 755,794,961,948.16
  5. Step 5: Solve for x
    x = 755,794,961,948.16/1,214,020.80
  6. Step 6: Final answer
    x = 622,555.20

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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.