Home / 1,297,064.78-1,790,427.04-780,842.67

Finding the Fourth Proportional to 1,297,064.78, 1,790,427.04 and 780,842.67

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Solution

The fourth proportional to 1,297,064.78, 1,790,427.04 and 780,842.67 is: 1,077,850.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,064.78 : 1,790,427.04 = 780,842.67 : x
  2. Step 2: Convert to fraction form
    1,297,064.78/1,790,427.04 = 780,842.67/x
  3. Step 3: Cross multiply
    1,297,064.78x = 1,790,427.04 × 780,842.67
  4. Step 4: Simplify right side
    1,297,064.78x = 1,398,041,821,687.59
  5. Step 5: Solve for x
    x = 1,398,041,821,687.59/1,297,064.78
  6. Step 6: Final answer
    x = 1,077,850.42

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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.