Home / 1,918,556.19-2,878,166.75-781,936.74

Finding the Fourth Proportional to 1,918,556.19, 2,878,166.75 and 781,936.74

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Solution

The fourth proportional to 1,918,556.19, 2,878,166.75 and 781,936.74 is: 1,173,040.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,556.19 : 2,878,166.75 = 781,936.74 : x
  2. Step 2: Convert to fraction form
    1,918,556.19/2,878,166.75 = 781,936.74/x
  3. Step 3: Cross multiply
    1,918,556.19x = 2,878,166.75 × 781,936.74
  4. Step 4: Simplify right side
    1,918,556.19x = 2,250,544,325,671.40
  5. Step 5: Solve for x
    x = 2,250,544,325,671.40/1,918,556.19
  6. Step 6: Final answer
    x = 1,173,040.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.