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Finding the Fourth Proportional to 608,999,258.96, 840,419,899.08 and 330,540,883.28

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Solution

The fourth proportional to 608,999,258.96, 840,419,899.08 and 330,540,883.28 is: 456,146,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,999,258.96 : 840,419,899.08 = 330,540,883.28 : x
  2. Step 2: Convert to fraction form
    608,999,258.96/840,419,899.08 = 330,540,883.28/x
  3. Step 3: Cross multiply
    608,999,258.96x = 840,419,899.08 × 330,540,883.28
  4. Step 4: Simplify right side
    608,999,258.96x = 277,793,135,767,991,648
  5. Step 5: Solve for x
    x = 277,793,135,767,991,648/608,999,258.96
  6. Step 6: Final answer
    x = 456,146,919.20

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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.