Home / 1,213,171.51-1,674,165.14-669,311.70

Finding the Fourth Proportional to 1,213,171.51, 1,674,165.14 and 669,311.70

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Solution

The fourth proportional to 1,213,171.51, 1,674,165.14 and 669,311.70 is: 923,643.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,171.51 : 1,674,165.14 = 669,311.70 : x
  2. Step 2: Convert to fraction form
    1,213,171.51/1,674,165.14 = 669,311.70/x
  3. Step 3: Cross multiply
    1,213,171.51x = 1,674,165.14 × 669,311.70
  4. Step 4: Simplify right side
    1,213,171.51x = 1,120,538,315,934.14
  5. Step 5: Solve for x
    x = 1,120,538,315,934.14/1,213,171.51
  6. Step 6: Final answer
    x = 923,643.78

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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.