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Finding the Fourth Proportional to 1,213,223, 1,674,247.74 and 676,679

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Solution

The fourth proportional to 1,213,223, 1,674,247.74 and 676,679 is: 933,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,223 : 1,674,247.74 = 676,679 : x
  2. Step 2: Convert to fraction form
    1,213,223/1,674,247.74 = 676,679/x
  3. Step 3: Cross multiply
    1,213,223x = 1,674,247.74 × 676,679
  4. Step 4: Simplify right side
    1,213,223x = 1,132,928,286,455.46
  5. Step 5: Solve for x
    x = 1,132,928,286,455.46/1,213,223
  6. Step 6: Final answer
    x = 933,817.02

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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.