Home / 398,227,388.64-549,379,456.86-379,764,380.85

Finding the Fourth Proportional to 398,227,388.64, 549,379,456.86 and 379,764,380.85

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Solution

The fourth proportional to 398,227,388.64, 549,379,456.86 and 379,764,380.85 is: 523,908,589.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,227,388.64 : 549,379,456.86 = 379,764,380.85 : x
  2. Step 2: Convert to fraction form
    398,227,388.64/549,379,456.86 = 379,764,380.85/x
  3. Step 3: Cross multiply
    398,227,388.64x = 549,379,456.86 × 379,764,380.85
  4. Step 4: Simplify right side
    398,227,388.64x = 208,634,749,286,147,200
  5. Step 5: Solve for x
    x = 208,634,749,286,147,200/398,227,388.64
  6. Step 6: Final answer
    x = 523,908,589.01

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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.