Home / 920,078.54-1,380,172.94-288,992.35

Finding the Fourth Proportional to 920,078.54, 1,380,172.94 and 288,992.35

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Solution

The fourth proportional to 920,078.54, 1,380,172.94 and 288,992.35 is: 433,505.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,078.54 : 1,380,172.94 = 288,992.35 : x
  2. Step 2: Convert to fraction form
    920,078.54/1,380,172.94 = 288,992.35/x
  3. Step 3: Cross multiply
    920,078.54x = 1,380,172.94 × 288,992.35
  4. Step 4: Simplify right side
    920,078.54x = 398,859,416,441.62
  5. Step 5: Solve for x
    x = 398,859,416,441.62/920,078.54
  6. Step 6: Final answer
    x = 433,505.84

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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.