Home / 3,121,844.90-4,308,840.36-1,897,890.75

Finding the Fourth Proportional to 3,121,844.90, 4,308,840.36 and 1,897,890.75

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Solution

The fourth proportional to 3,121,844.90, 4,308,840.36 and 1,897,890.75 is: 2,619,511.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,844.90 : 4,308,840.36 = 1,897,890.75 : x
  2. Step 2: Convert to fraction form
    3,121,844.90/4,308,840.36 = 1,897,890.75/x
  3. Step 3: Cross multiply
    3,121,844.90x = 4,308,840.36 × 1,897,890.75
  4. Step 4: Simplify right side
    3,121,844.90x = 8,177,708,262,470.67
  5. Step 5: Solve for x
    x = 8,177,708,262,470.67/3,121,844.90
  6. Step 6: Final answer
    x = 2,619,511.39

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1.5x scale

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.