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Finding the Fourth Proportional to 1,857,493.94, 2,786,240.91 and 1,485,878.90

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Solution

The fourth proportional to 1,857,493.94, 2,786,240.91 and 1,485,878.90 is: 2,228,818.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857,493.94 : 2,786,240.91 = 1,485,878.90 : x
  2. Step 2: Convert to fraction form
    1,857,493.94/2,786,240.91 = 1,485,878.90/x
  3. Step 3: Cross multiply
    1,857,493.94x = 2,786,240.91 × 1,485,878.90
  4. Step 4: Simplify right side
    1,857,493.94x = 4,140,016,578,485.80
  5. Step 5: Solve for x
    x = 4,140,016,578,485.80/1,857,493.94
  6. Step 6: Final answer
    x = 2,228,818.35

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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.