Home / 1,205,212.79-1,663,296.95-661,453.69

Finding the Fourth Proportional to 1,205,212.79, 1,663,296.95 and 661,453.69

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Solution

The fourth proportional to 1,205,212.79, 1,663,296.95 and 661,453.69 is: 912,862.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,212.79 : 1,663,296.95 = 661,453.69 : x
  2. Step 2: Convert to fraction form
    1,205,212.79/1,663,296.95 = 661,453.69/x
  3. Step 3: Cross multiply
    1,205,212.79x = 1,663,296.95 × 661,453.69
  4. Step 4: Simplify right side
    1,205,212.79x = 1,100,193,893,519.49
  5. Step 5: Solve for x
    x = 1,100,193,893,519.49/1,205,212.79
  6. Step 6: Final answer
    x = 912,862.78

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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.