Home / 1,207,819.11-1,666,795.74-663,989.85

Finding the Fourth Proportional to 1,207,819.11, 1,666,795.74 and 663,989.85

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Solution

The fourth proportional to 1,207,819.11, 1,666,795.74 and 663,989.85 is: 916,308.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,819.11 : 1,666,795.74 = 663,989.85 : x
  2. Step 2: Convert to fraction form
    1,207,819.11/1,666,795.74 = 663,989.85/x
  3. Step 3: Cross multiply
    1,207,819.11x = 1,666,795.74 × 663,989.85
  4. Step 4: Simplify right side
    1,207,819.11x = 1,106,735,453,383.24
  5. Step 5: Solve for x
    x = 1,106,735,453,383.24/1,207,819.11
  6. Step 6: Final answer
    x = 916,308.94

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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.