Home / 1,231,310.80-1,847,023.80-389,928.40

Finding the Fourth Proportional to 1,231,310.80, 1,847,023.80 and 389,928.40

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Solution

The fourth proportional to 1,231,310.80, 1,847,023.80 and 389,928.40 is: 584,910.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,310.80 : 1,847,023.80 = 389,928.40 : x
  2. Step 2: Convert to fraction form
    1,231,310.80/1,847,023.80 = 389,928.40/x
  3. Step 3: Cross multiply
    1,231,310.80x = 1,847,023.80 × 389,928.40
  4. Step 4: Simplify right side
    1,231,310.80x = 720,207,035,095.92
  5. Step 5: Solve for x
    x = 720,207,035,095.92/1,231,310.80
  6. Step 6: Final answer
    x = 584,910.84

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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.