Home / 505,738,810.60-759,175,086.30-391,230,989.80

Finding the Fourth Proportional to 505,738,810.60, 759,175,086.30 and 391,230,989.80

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Solution

The fourth proportional to 505,738,810.60, 759,175,086.30 and 391,230,989.80 is: 587,285,006.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,738,810.60 : 759,175,086.30 = 391,230,989.80 : x
  2. Step 2: Convert to fraction form
    505,738,810.60/759,175,086.30 = 391,230,989.80/x
  3. Step 3: Cross multiply
    505,738,810.60x = 759,175,086.30 × 391,230,989.80
  4. Step 4: Simplify right side
    505,738,810.60x = 297,012,820,444,649,408
  5. Step 5: Solve for x
    x = 297,012,820,444,649,408/505,738,810.60
  6. Step 6: Final answer
    x = 587,285,006.05

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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.