Home / 1,220,893.76-1,684,628.06-813,603.64

Finding the Fourth Proportional to 1,220,893.76, 1,684,628.06 and 813,603.64

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Solution

The fourth proportional to 1,220,893.76, 1,684,628.06 and 813,603.64 is: 1,122,636.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,893.76 : 1,684,628.06 = 813,603.64 : x
  2. Step 2: Convert to fraction form
    1,220,893.76/1,684,628.06 = 813,603.64/x
  3. Step 3: Cross multiply
    1,220,893.76x = 1,684,628.06 × 813,603.64
  4. Step 4: Simplify right side
    1,220,893.76x = 1,370,619,521,662.14
  5. Step 5: Solve for x
    x = 1,370,619,521,662.14/1,220,893.76
  6. Step 6: Final answer
    x = 1,122,636.19

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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.