Home / 1,243,546.20-1,866,701.70-770,765.40

Finding the Fourth Proportional to 1,243,546.20, 1,866,701.70 and 770,765.40

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Solution

The fourth proportional to 1,243,546.20, 1,866,701.70 and 770,765.40 is: 1,157,004.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,546.20 : 1,866,701.70 = 770,765.40 : x
  2. Step 2: Convert to fraction form
    1,243,546.20/1,866,701.70 = 770,765.40/x
  3. Step 3: Cross multiply
    1,243,546.20x = 1,866,701.70 × 770,765.40
  4. Step 4: Simplify right side
    1,243,546.20x = 1,438,789,082,481.18
  5. Step 5: Solve for x
    x = 1,438,789,082,481.18/1,243,546.20
  6. Step 6: Final answer
    x = 1,157,004.93

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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.