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Finding the Fourth Proportional to 486,745,339.66, 671,741,524.74 and 274,978,722.98

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Solution

The fourth proportional to 486,745,339.66, 671,741,524.74 and 274,978,722.98 is: 379,489,255.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,745,339.66 : 671,741,524.74 = 274,978,722.98 : x
  2. Step 2: Convert to fraction form
    486,745,339.66/671,741,524.74 = 274,978,722.98/x
  3. Step 3: Cross multiply
    486,745,339.66x = 671,741,524.74 × 274,978,722.98
  4. Step 4: Simplify right side
    486,745,339.66x = 184,714,626,648,353,792
  5. Step 5: Solve for x
    x = 184,714,626,648,353,792/486,745,339.66
  6. Step 6: Final answer
    x = 379,489,255.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.