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Finding the Fourth Proportional to 1,438,983.06, 1,985,744.57 and 794,389.43

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Solution

The fourth proportional to 1,438,983.06, 1,985,744.57 and 794,389.43 is: 1,096,228.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,983.06 : 1,985,744.57 = 794,389.43 : x
  2. Step 2: Convert to fraction form
    1,438,983.06/1,985,744.57 = 794,389.43/x
  3. Step 3: Cross multiply
    1,438,983.06x = 1,985,744.57 × 794,389.43
  4. Step 4: Simplify right side
    1,438,983.06x = 1,577,454,483,187.23
  5. Step 5: Solve for x
    x = 1,577,454,483,187.23/1,438,983.06
  6. Step 6: Final answer
    x = 1,096,228.67

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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.