Home / 805,883,408.20-1,208,526,513.90-260,642,729.80

Finding the Fourth Proportional to 805,883,408.20, 1,208,526,513.90 and 260,642,729.80

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Solution

The fourth proportional to 805,883,408.20, 1,208,526,513.90 and 260,642,729.80 is: 390,867,520.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,883,408.20 : 1,208,526,513.90 = 260,642,729.80 : x
  2. Step 2: Convert to fraction form
    805,883,408.20/1,208,526,513.90 = 260,642,729.80/x
  3. Step 3: Cross multiply
    805,883,408.20x = 1,208,526,513.90 × 260,642,729.80
  4. Step 4: Simplify right side
    805,883,408.20x = 314,993,649,618,573,696
  5. Step 5: Solve for x
    x = 314,993,649,618,573,696/805,883,408.20
  6. Step 6: Final answer
    x = 390,867,520.55

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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.