Home / 398,354,440.64-549,729,657.65-219,734,299.76

Finding the Fourth Proportional to 398,354,440.64, 549,729,657.65 and 219,734,299.76

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Solution

The fourth proportional to 398,354,440.64, 549,729,657.65 and 219,734,299.76 is: 303,233,625.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,354,440.64 : 549,729,657.65 = 219,734,299.76 : x
  2. Step 2: Convert to fraction form
    398,354,440.64/549,729,657.65 = 219,734,299.76/x
  3. Step 3: Cross multiply
    398,354,440.64x = 549,729,657.65 × 219,734,299.76
  4. Step 4: Simplify right side
    398,354,440.64x = 120,794,461,382,950,944
  5. Step 5: Solve for x
    x = 120,794,461,382,950,944/398,354,440.64
  6. Step 6: Final answer
    x = 303,233,625.78

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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.