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Finding the Fourth Proportional to 1,213,463, 1,674,578.94 and 676,919

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Solution

The fourth proportional to 1,213,463, 1,674,578.94 and 676,919 is: 934,148.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,463 : 1,674,578.94 = 676,919 : x
  2. Step 2: Convert to fraction form
    1,213,463/1,674,578.94 = 676,919/x
  3. Step 3: Cross multiply
    1,213,463x = 1,674,578.94 × 676,919
  4. Step 4: Simplify right side
    1,213,463x = 1,133,554,301,485.86
  5. Step 5: Solve for x
    x = 1,133,554,301,485.86/1,213,463
  6. Step 6: Final answer
    x = 934,148.22

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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.