Home / 1,400,372.10-2,100,668.58-690,012.90

Finding the Fourth Proportional to 1,400,372.10, 2,100,668.58 and 690,012.90

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Solution

The fourth proportional to 1,400,372.10, 2,100,668.58 and 690,012.90 is: 1,035,073.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,372.10 : 2,100,668.58 = 690,012.90 : x
  2. Step 2: Convert to fraction form
    1,400,372.10/2,100,668.58 = 690,012.90/x
  3. Step 3: Cross multiply
    1,400,372.10x = 2,100,668.58 × 690,012.90
  4. Step 4: Simplify right side
    1,400,372.10x = 1,449,488,418,824.68
  5. Step 5: Solve for x
    x = 1,449,488,418,824.68/1,400,372.10
  6. Step 6: Final answer
    x = 1,035,073.76

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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.