Home / 370,980,010.20-556,470,015.30-128,667,408.60

Finding the Fourth Proportional to 370,980,010.20, 556,470,015.30 and 128,667,408.60

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Solution

The fourth proportional to 370,980,010.20, 556,470,015.30 and 128,667,408.60 is: 193,001,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,980,010.20 : 556,470,015.30 = 128,667,408.60 : x
  2. Step 2: Convert to fraction form
    370,980,010.20/556,470,015.30 = 128,667,408.60/x
  3. Step 3: Cross multiply
    370,980,010.20x = 556,470,015.30 × 128,667,408.60
  4. Step 4: Simplify right side
    370,980,010.20x = 71,599,554,832,253,344
  5. Step 5: Solve for x
    x = 71,599,554,832,253,344/370,980,010.20
  6. Step 6: Final answer
    x = 193,001,112.90

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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.