Home / 398,453,858.40-549,657,212.40-324,197,451.84

Finding the Fourth Proportional to 398,453,858.40, 549,657,212.40 and 324,197,451.84

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Solution

The fourth proportional to 398,453,858.40, 549,657,212.40 and 324,197,451.84 is: 447,222,341.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,453,858.40 : 549,657,212.40 = 324,197,451.84 : x
  2. Step 2: Convert to fraction form
    398,453,858.40/549,657,212.40 = 324,197,451.84/x
  3. Step 3: Cross multiply
    398,453,858.40x = 549,657,212.40 × 324,197,451.84
  4. Step 4: Simplify right side
    398,453,858.40x = 178,197,467,645,557,632
  5. Step 5: Solve for x
    x = 178,197,467,645,557,632/398,453,858.40
  6. Step 6: Final answer
    x = 447,222,341.78

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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.