Home / 485,969,358.75-670,390,647.61-295,179,605.69

Finding the Fourth Proportional to 485,969,358.75, 670,390,647.61 and 295,179,605.69

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Solution

The fourth proportional to 485,969,358.75, 670,390,647.61 and 295,179,605.69 is: 407,197,786.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,969,358.75 : 670,390,647.61 = 295,179,605.69 : x
  2. Step 2: Convert to fraction form
    485,969,358.75/670,390,647.61 = 295,179,605.69/x
  3. Step 3: Cross multiply
    485,969,358.75x = 670,390,647.61 × 295,179,605.69
  4. Step 4: Simplify right side
    485,969,358.75x = 197,885,647,019,783,552
  5. Step 5: Solve for x
    x = 197,885,647,019,783,552/485,969,358.75
  6. Step 6: Final answer
    x = 407,197,786.15

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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.