Home / 1,405,828.20-2,105,875.10-871,709.80

Finding the Fourth Proportional to 1,405,828.20, 2,105,875.10 and 871,709.80

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Solution

The fourth proportional to 1,405,828.20, 2,105,875.10 and 871,709.80 is: 1,305,786.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,828.20 : 2,105,875.10 = 871,709.80 : x
  2. Step 2: Convert to fraction form
    1,405,828.20/2,105,875.10 = 871,709.80/x
  3. Step 3: Cross multiply
    1,405,828.20x = 2,105,875.10 × 871,709.80
  4. Step 4: Simplify right side
    1,405,828.20x = 1,835,711,962,245.98
  5. Step 5: Solve for x
    x = 1,835,711,962,245.98/1,405,828.20
  6. Step 6: Final answer
    x = 1,305,786.84

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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.