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Finding the Fourth Proportional to 1,213,224, 1,674,249.12 and 676,680

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Solution

The fourth proportional to 1,213,224, 1,674,249.12 and 676,680 is: 933,818.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,224 : 1,674,249.12 = 676,680 : x
  2. Step 2: Convert to fraction form
    1,213,224/1,674,249.12 = 676,680/x
  3. Step 3: Cross multiply
    1,213,224x = 1,674,249.12 × 676,680
  4. Step 4: Simplify right side
    1,213,224x = 1,132,930,894,521.60
  5. Step 5: Solve for x
    x = 1,132,930,894,521.60/1,213,224
  6. Step 6: Final answer
    x = 933,818.40

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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.