Home / 1,981,105.20-2,971,657.80-561,142.80

Finding the Fourth Proportional to 1,981,105.20, 2,971,657.80 and 561,142.80

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Solution

The fourth proportional to 1,981,105.20, 2,971,657.80 and 561,142.80 is: 841,714.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,105.20 : 2,971,657.80 = 561,142.80 : x
  2. Step 2: Convert to fraction form
    1,981,105.20/2,971,657.80 = 561,142.80/x
  3. Step 3: Cross multiply
    1,981,105.20x = 2,971,657.80 × 561,142.80
  4. Step 4: Simplify right side
    1,981,105.20x = 1,667,524,378,533.84
  5. Step 5: Solve for x
    x = 1,667,524,378,533.84/1,981,105.20
  6. Step 6: Final answer
    x = 841,714.20

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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.