Home / 2,121,318.74-2,928,884.40-1,985,801.30

Finding the Fourth Proportional to 2,121,318.74, 2,928,884.40 and 1,985,801.30

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Solution

The fourth proportional to 2,121,318.74, 2,928,884.40 and 1,985,801.30 is: 2,741,776.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121,318.74 : 2,928,884.40 = 1,985,801.30 : x
  2. Step 2: Convert to fraction form
    2,121,318.74/2,928,884.40 = 1,985,801.30/x
  3. Step 3: Cross multiply
    2,121,318.74x = 2,928,884.40 × 1,985,801.30
  4. Step 4: Simplify right side
    2,121,318.74x = 5,816,182,449,069.72
  5. Step 5: Solve for x
    x = 5,816,182,449,069.72/2,121,318.74
  6. Step 6: Final answer
    x = 2,741,776.77

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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.