Home / 1,421,120.72-2,127,861.30-1,082,548.54

Finding the Fourth Proportional to 1,421,120.72, 2,127,861.30 and 1,082,548.54

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Solution

The fourth proportional to 1,421,120.72, 2,127,861.30 and 1,082,548.54 is: 1,620,913.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,120.72 : 2,127,861.30 = 1,082,548.54 : x
  2. Step 2: Convert to fraction form
    1,421,120.72/2,127,861.30 = 1,082,548.54/x
  3. Step 3: Cross multiply
    1,421,120.72x = 2,127,861.30 × 1,082,548.54
  4. Step 4: Simplify right side
    1,421,120.72x = 2,303,513,143,637.50
  5. Step 5: Solve for x
    x = 2,303,513,143,637.50/1,421,120.72
  6. Step 6: Final answer
    x = 1,620,913.07

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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.