Home / 278,909,512.60-418,380,015.30-84,827,259.40

Finding the Fourth Proportional to 278,909,512.60, 418,380,015.30 and 84,827,259.40

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Solution

The fourth proportional to 278,909,512.60, 418,380,015.30 and 84,827,259.40 is: 127,245,678.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,909,512.60 : 418,380,015.30 = 84,827,259.40 : x
  2. Step 2: Convert to fraction form
    278,909,512.60/418,380,015.30 = 84,827,259.40/x
  3. Step 3: Cross multiply
    278,909,512.60x = 418,380,015.30 × 84,827,259.40
  4. Step 4: Simplify right side
    278,909,512.60x = 35,490,030,085,629,072
  5. Step 5: Solve for x
    x = 35,490,030,085,629,072/278,909,512.60
  6. Step 6: Final answer
    x = 127,245,678.19

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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.