Home / 278,909,512.10-418,380,014.55-84,827,258.90

Finding the Fourth Proportional to 278,909,512.10, 418,380,014.55 and 84,827,258.90

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Solution

The fourth proportional to 278,909,512.10, 418,380,014.55 and 84,827,258.90 is: 127,245,677.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,909,512.10 : 418,380,014.55 = 84,827,258.90 : x
  2. Step 2: Convert to fraction form
    278,909,512.10/418,380,014.55 = 84,827,258.90/x
  3. Step 3: Cross multiply
    278,909,512.10x = 418,380,014.55 × 84,827,258.90
  4. Step 4: Simplify right side
    278,909,512.10x = 35,490,029,812,818,620
  5. Step 5: Solve for x
    x = 35,490,029,812,818,620/278,909,512.10
  6. Step 6: Final answer
    x = 127,245,677.44

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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.