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Finding the Fourth Proportional to 1,330,868.20, 1,992,803.10 and 973,949.80

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Solution

The fourth proportional to 1,330,868.20, 1,992,803.10 and 973,949.80 is: 1,458,363.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,868.20 : 1,992,803.10 = 973,949.80 : x
  2. Step 2: Convert to fraction form
    1,330,868.20/1,992,803.10 = 973,949.80/x
  3. Step 3: Cross multiply
    1,330,868.20x = 1,992,803.10 × 973,949.80
  4. Step 4: Simplify right side
    1,330,868.20x = 1,940,890,180,684.38
  5. Step 5: Solve for x
    x = 1,940,890,180,684.38/1,330,868.20
  6. Step 6: Final answer
    x = 1,458,363.93

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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.