Home / 3,840,649.40-5,300,056.32-2,121,657.68

Finding the Fourth Proportional to 3,840,649.40, 5,300,056.32 and 2,121,657.68

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Solution

The fourth proportional to 3,840,649.40, 5,300,056.32 and 2,121,657.68 is: 2,927,865.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840,649.40 : 5,300,056.32 = 2,121,657.68 : x
  2. Step 2: Convert to fraction form
    3,840,649.40/5,300,056.32 = 2,121,657.68/x
  3. Step 3: Cross multiply
    3,840,649.40x = 5,300,056.32 × 2,121,657.68
  4. Step 4: Simplify right side
    3,840,649.40x = 11,244,905,195,760.54
  5. Step 5: Solve for x
    x = 11,244,905,195,760.54/3,840,649.40
  6. Step 6: Final answer
    x = 2,927,865.58

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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.