Home / 1,914,362,143.20-2,871,543,214.80-1,638,863,128.80

Finding the Fourth Proportional to 1,914,362,143.20, 2,871,543,214.80 and 1,638,863,128.80

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Solution

The fourth proportional to 1,914,362,143.20, 2,871,543,214.80 and 1,638,863,128.80 is: 2,458,294,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914,362,143.20 : 2,871,543,214.80 = 1,638,863,128.80 : x
  2. Step 2: Convert to fraction form
    1,914,362,143.20/2,871,543,214.80 = 1,638,863,128.80/x
  3. Step 3: Cross multiply
    1,914,362,143.20x = 2,871,543,214.80 × 1,638,863,128.80
  4. Step 4: Simplify right side
    1,914,362,143.20x = 4,706,066,297,491,538,944
  5. Step 5: Solve for x
    x = 4,706,066,297,491,538,944/1,914,362,143.20
  6. Step 6: Final answer
    x = 2,458,294,693.20

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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.