Home / 3,931,489.80-5,427,129.86-2,643,077.51

Finding the Fourth Proportional to 3,931,489.80, 5,427,129.86 and 2,643,077.51

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Solution

The fourth proportional to 3,931,489.80, 5,427,129.86 and 2,643,077.51 is: 3,648,572.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931,489.80 : 5,427,129.86 = 2,643,077.51 : x
  2. Step 2: Convert to fraction form
    3,931,489.80/5,427,129.86 = 2,643,077.51/x
  3. Step 3: Cross multiply
    3,931,489.80x = 5,427,129.86 × 2,643,077.51
  4. Step 4: Simplify right side
    3,931,489.80x = 14,344,324,836,464.41
  5. Step 5: Solve for x
    x = 14,344,324,836,464.41/3,931,489.80
  6. Step 6: Final answer
    x = 3,648,572.31

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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.