Home / 1,432,857.72-1,977,626.30-821,421.06

Finding the Fourth Proportional to 1,432,857.72, 1,977,626.30 and 821,421.06

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Solution

The fourth proportional to 1,432,857.72, 1,977,626.30 and 821,421.06 is: 1,133,723.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,857.72 : 1,977,626.30 = 821,421.06 : x
  2. Step 2: Convert to fraction form
    1,432,857.72/1,977,626.30 = 821,421.06/x
  3. Step 3: Cross multiply
    1,432,857.72x = 1,977,626.30 × 821,421.06
  4. Step 4: Simplify right side
    1,432,857.72x = 1,624,463,891,629.88
  5. Step 5: Solve for x
    x = 1,624,463,891,629.88/1,432,857.72
  6. Step 6: Final answer
    x = 1,133,723.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.