Home / 278,909,511.60-418,380,013.80-84,827,258.40

Finding the Fourth Proportional to 278,909,511.60, 418,380,013.80 and 84,827,258.40

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Solution

The fourth proportional to 278,909,511.60, 418,380,013.80 and 84,827,258.40 is: 127,245,676.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,909,511.60 : 418,380,013.80 = 84,827,258.40 : x
  2. Step 2: Convert to fraction form
    278,909,511.60/418,380,013.80 = 84,827,258.40/x
  3. Step 3: Cross multiply
    278,909,511.60x = 418,380,013.80 × 84,827,258.40
  4. Step 4: Simplify right side
    278,909,511.60x = 35,490,029,540,008,168
  5. Step 5: Solve for x
    x = 35,490,029,540,008,168/278,909,511.60
  6. Step 6: Final answer
    x = 127,245,676.69

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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.