Home / 1,231,276.80-1,846,972.80-389,894.40

Finding the Fourth Proportional to 1,231,276.80, 1,846,972.80 and 389,894.40

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Solution

The fourth proportional to 1,231,276.80, 1,846,972.80 and 389,894.40 is: 584,859.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,276.80 : 1,846,972.80 = 389,894.40 : x
  2. Step 2: Convert to fraction form
    1,231,276.80/1,846,972.80 = 389,894.40/x
  3. Step 3: Cross multiply
    1,231,276.80x = 1,846,972.80 × 389,894.40
  4. Step 4: Simplify right side
    1,231,276.80x = 720,124,351,672.32
  5. Step 5: Solve for x
    x = 720,124,351,672.32/1,231,276.80
  6. Step 6: Final answer
    x = 584,859.84

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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.