Home / 318,986,381.50-478,479,571.71-76,649,285.50

Finding the Fourth Proportional to 318,986,381.50, 478,479,571.71 and 76,649,285.50

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Solution

The fourth proportional to 318,986,381.50, 478,479,571.71 and 76,649,285.50 is: 114,973,928.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,986,381.50 : 478,479,571.71 = 76,649,285.50 : x
  2. Step 2: Convert to fraction form
    318,986,381.50/478,479,571.71 = 76,649,285.50/x
  3. Step 3: Cross multiply
    318,986,381.50x = 478,479,571.71 × 76,649,285.50
  4. Step 4: Simplify right side
    318,986,381.50x = 36,675,117,297,917,512
  5. Step 5: Solve for x
    x = 36,675,117,297,917,512/318,986,381.50
  6. Step 6: Final answer
    x = 114,973,928.12

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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.