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Finding the Fourth Proportional to 448,458,086.40, 672,687,129.60 and 448,458,086.40

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Solution

The fourth proportional to 448,458,086.40, 672,687,129.60 and 448,458,086.40 is: 672,687,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,458,086.40 : 672,687,129.60 = 448,458,086.40 : x
  2. Step 2: Convert to fraction form
    448,458,086.40/672,687,129.60 = 448,458,086.40/x
  3. Step 3: Cross multiply
    448,458,086.40x = 672,687,129.60 × 448,458,086.40
  4. Step 4: Simplify right side
    448,458,086.40x = 301,671,982,886,324,800
  5. Step 5: Solve for x
    x = 301,671,982,886,324,800/448,458,086.40
  6. Step 6: Final answer
    x = 672,687,129.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.