Home / 1,205,099.37-1,662,981.48-661,221.63

Finding the Fourth Proportional to 1,205,099.37, 1,662,981.48 and 661,221.63

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Solution

The fourth proportional to 1,205,099.37, 1,662,981.48 and 661,221.63 is: 912,455.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,099.37 : 1,662,981.48 = 661,221.63 : x
  2. Step 2: Convert to fraction form
    1,205,099.37/1,662,981.48 = 661,221.63/x
  3. Step 3: Cross multiply
    1,205,099.37x = 1,662,981.48 × 661,221.63
  4. Step 4: Simplify right side
    1,205,099.37x = 1,099,599,324,865.41
  5. Step 5: Solve for x
    x = 1,099,599,324,865.41/1,205,099.37
  6. Step 6: Final answer
    x = 912,455.31

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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.