Home / 1,214,015.80-1,821,023.70-654,143.80

Finding the Fourth Proportional to 1,214,015.80, 1,821,023.70 and 654,143.80

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Solution

The fourth proportional to 1,214,015.80, 1,821,023.70 and 654,143.80 is: 981,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,015.80 : 1,821,023.70 = 654,143.80 : x
  2. Step 2: Convert to fraction form
    1,214,015.80/1,821,023.70 = 654,143.80/x
  3. Step 3: Cross multiply
    1,214,015.80x = 1,821,023.70 × 654,143.80
  4. Step 4: Simplify right side
    1,214,015.80x = 1,191,211,363,008.06
  5. Step 5: Solve for x
    x = 1,191,211,363,008.06/1,214,015.80
  6. Step 6: Final answer
    x = 981,215.70

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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.