Home / 1,213,143.83-1,674,144.05-669,279.41

Finding the Fourth Proportional to 1,213,143.83, 1,674,144.05 and 669,279.41

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Solution

The fourth proportional to 1,213,143.83, 1,674,144.05 and 669,279.41 is: 923,608.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,143.83 : 1,674,144.05 = 669,279.41 : x
  2. Step 2: Convert to fraction form
    1,213,143.83/1,674,144.05 = 669,279.41/x
  3. Step 3: Cross multiply
    1,213,143.83x = 1,674,144.05 × 669,279.41
  4. Step 4: Simplify right side
    1,213,143.83x = 1,120,470,136,599.93
  5. Step 5: Solve for x
    x = 1,120,470,136,599.93/1,213,143.83
  6. Step 6: Final answer
    x = 923,608.65

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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.