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Finding the Fourth Proportional to 1,928,300.45, 2,892,035.49 and 789,946.45

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Solution

The fourth proportional to 1,928,300.45, 2,892,035.49 and 789,946.45 is: 1,184,749.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928,300.45 : 2,892,035.49 = 789,946.45 : x
  2. Step 2: Convert to fraction form
    1,928,300.45/2,892,035.49 = 789,946.45/x
  3. Step 3: Cross multiply
    1,928,300.45x = 2,892,035.49 × 789,946.45
  4. Step 4: Simplify right side
    1,928,300.45x = 2,284,553,170,984.42
  5. Step 5: Solve for x
    x = 2,284,553,170,984.42/1,928,300.45
  6. Step 6: Final answer
    x = 1,184,749.59

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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.