Home / 679,907,874.12-1,020,040,037.69-213,550,460.48

Finding the Fourth Proportional to 679,907,874.12, 1,020,040,037.69 and 213,550,460.48

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Solution

The fourth proportional to 679,907,874.12, 1,020,040,037.69 and 213,550,460.48 is: 320,381,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,907,874.12 : 1,020,040,037.69 = 213,550,460.48 : x
  2. Step 2: Convert to fraction form
    679,907,874.12/1,020,040,037.69 = 213,550,460.48/x
  3. Step 3: Cross multiply
    679,907,874.12x = 1,020,040,037.69 × 213,550,460.48
  4. Step 4: Simplify right side
    679,907,874.12x = 217,830,019,750,568,096
  5. Step 5: Solve for x
    x = 217,830,019,750,568,096/679,907,874.12
  6. Step 6: Final answer
    x = 320,381,669.40

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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.