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Finding the Fourth Proportional to 1,213,556, 1,674,708 and 677,012

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Solution

The fourth proportional to 1,213,556, 1,674,708 and 677,012 is: 934,276.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,556 : 1,674,708 = 677,012 : x
  2. Step 2: Convert to fraction form
    1,213,556/1,674,708 = 677,012/x
  3. Step 3: Cross multiply
    1,213,556x = 1,674,708 × 677,012
  4. Step 4: Simplify right side
    1,213,556x = 1,133,797,412,496
  5. Step 5: Solve for x
    x = 1,133,797,412,496/1,213,556
  6. Step 6: Final answer
    x = 934,276.96

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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.