Home / 1,231,286.80-1,846,987.80-389,904.40

Finding the Fourth Proportional to 1,231,286.80, 1,846,987.80 and 389,904.40

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Solution

The fourth proportional to 1,231,286.80, 1,846,987.80 and 389,904.40 is: 584,874.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,286.80 : 1,846,987.80 = 389,904.40 : x
  2. Step 2: Convert to fraction form
    1,231,286.80/1,846,987.80 = 389,904.40/x
  3. Step 3: Cross multiply
    1,231,286.80x = 1,846,987.80 × 389,904.40
  4. Step 4: Simplify right side
    1,231,286.80x = 720,148,669,966.32
  5. Step 5: Solve for x
    x = 720,148,669,966.32/1,231,286.80
  6. Step 6: Final answer
    x = 584,874.84

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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.