Home / 863,136,416.80-1,294,704,625.20-518,479,213.60

Finding the Fourth Proportional to 863,136,416.80, 1,294,704,625.20 and 518,479,213.60

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Solution

The fourth proportional to 863,136,416.80, 1,294,704,625.20 and 518,479,213.60 is: 777,718,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,136,416.80 : 1,294,704,625.20 = 518,479,213.60 : x
  2. Step 2: Convert to fraction form
    863,136,416.80/1,294,704,625.20 = 518,479,213.60/x
  3. Step 3: Cross multiply
    863,136,416.80x = 1,294,704,625.20 × 518,479,213.60
  4. Step 4: Simplify right side
    863,136,416.80x = 671,277,435,917,978,752
  5. Step 5: Solve for x
    x = 671,277,435,917,978,752/863,136,416.80
  6. Step 6: Final answer
    x = 777,718,820.40

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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.