Home / 1,440,328.10-1,987,629.26-786,940.06

Finding the Fourth Proportional to 1,440,328.10, 1,987,629.26 and 786,940.06

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Solution

The fourth proportional to 1,440,328.10, 1,987,629.26 and 786,940.06 is: 1,085,964.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,328.10 : 1,987,629.26 = 786,940.06 : x
  2. Step 2: Convert to fraction form
    1,440,328.10/1,987,629.26 = 786,940.06/x
  3. Step 3: Cross multiply
    1,440,328.10x = 1,987,629.26 × 786,940.06
  4. Step 4: Simplify right side
    1,440,328.10x = 1,564,145,086,120.43
  5. Step 5: Solve for x
    x = 1,564,145,086,120.43/1,440,328.10
  6. Step 6: Final answer
    x = 1,085,964.43

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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.