Home / 1,205,290.80-1,663,296.12-661,435.44

Finding the Fourth Proportional to 1,205,290.80, 1,663,296.12 and 661,435.44

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Solution

The fourth proportional to 1,205,290.80, 1,663,296.12 and 661,435.44 is: 912,778.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,290.80 : 1,663,296.12 = 661,435.44 : x
  2. Step 2: Convert to fraction form
    1,205,290.80/1,663,296.12 = 661,435.44/x
  3. Step 3: Cross multiply
    1,205,290.80x = 1,663,296.12 × 661,435.44
  4. Step 4: Simplify right side
    1,205,290.80x = 1,100,163,000,982.49
  5. Step 5: Solve for x
    x = 1,100,163,000,982.49/1,205,290.80
  6. Step 6: Final answer
    x = 912,778.06

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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.