Home / 1,385,662.60-2,078,493.90-639,166.60

Finding the Fourth Proportional to 1,385,662.60, 2,078,493.90 and 639,166.60

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Solution

The fourth proportional to 1,385,662.60, 2,078,493.90 and 639,166.60 is: 958,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,662.60 : 2,078,493.90 = 639,166.60 : x
  2. Step 2: Convert to fraction form
    1,385,662.60/2,078,493.90 = 639,166.60/x
  3. Step 3: Cross multiply
    1,385,662.60x = 2,078,493.90 × 639,166.60
  4. Step 4: Simplify right side
    1,385,662.60x = 1,328,503,879,183.74
  5. Step 5: Solve for x
    x = 1,328,503,879,183.74/1,385,662.60
  6. Step 6: Final answer
    x = 958,749.90

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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.