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Finding the Fourth Proportional to 1,945,845.60, 2,918,768.40 and 683,800.80

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Solution

The fourth proportional to 1,945,845.60, 2,918,768.40 and 683,800.80 is: 1,025,701.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945,845.60 : 2,918,768.40 = 683,800.80 : x
  2. Step 2: Convert to fraction form
    1,945,845.60/2,918,768.40 = 683,800.80/x
  3. Step 3: Cross multiply
    1,945,845.60x = 2,918,768.40 × 683,800.80
  4. Step 4: Simplify right side
    1,945,845.60x = 1,995,856,166,934.72
  5. Step 5: Solve for x
    x = 1,995,856,166,934.72/1,945,845.60
  6. Step 6: Final answer
    x = 1,025,701.20

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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.