Home / 398,453,859.90-549,657,214.47-324,197,453.34

Finding the Fourth Proportional to 398,453,859.90, 549,657,214.47 and 324,197,453.34

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Solution

The fourth proportional to 398,453,859.90, 549,657,214.47 and 324,197,453.34 is: 447,222,343.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,453,859.90 : 549,657,214.47 = 324,197,453.34 : x
  2. Step 2: Convert to fraction form
    398,453,859.90/549,657,214.47 = 324,197,453.34/x
  3. Step 3: Cross multiply
    398,453,859.90x = 549,657,214.47 × 324,197,453.34
  4. Step 4: Simplify right side
    398,453,859.90x = 178,197,469,141,132,192
  5. Step 5: Solve for x
    x = 178,197,469,141,132,192/398,453,859.90
  6. Step 6: Final answer
    x = 447,222,343.85

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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.