Home / 858,932,825.60-1,288,063,315.20-313,393,548.80

Finding the Fourth Proportional to 858,932,825.60, 1,288,063,315.20 and 313,393,548.80

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Solution

The fourth proportional to 858,932,825.60, 1,288,063,315.20 and 313,393,548.80 is: 469,967,756.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,932,825.60 : 1,288,063,315.20 = 313,393,548.80 : x
  2. Step 2: Convert to fraction form
    858,932,825.60/1,288,063,315.20 = 313,393,548.80/x
  3. Step 3: Cross multiply
    858,932,825.60x = 1,288,063,315.20 × 313,393,548.80
  4. Step 4: Simplify right side
    858,932,825.60x = 403,670,733,429,620,992
  5. Step 5: Solve for x
    x = 403,670,733,429,620,992/858,932,825.60
  6. Step 6: Final answer
    x = 469,967,756.96

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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.