Home / 919,870,850.40-1,379,932,246.80-306,391,106.40

Finding the Fourth Proportional to 919,870,850.40, 1,379,932,246.80 and 306,391,106.40

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Solution

The fourth proportional to 919,870,850.40, 1,379,932,246.80 and 306,391,106.40 is: 459,628,618.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,870,850.40 : 1,379,932,246.80 = 306,391,106.40 : x
  2. Step 2: Convert to fraction form
    919,870,850.40/1,379,932,246.80 = 306,391,106.40/x
  3. Step 3: Cross multiply
    919,870,850.40x = 1,379,932,246.80 × 306,391,106.40
  4. Step 4: Simplify right side
    919,870,850.40x = 422,798,967,854,089,792
  5. Step 5: Solve for x
    x = 422,798,967,854,089,792/919,870,850.40
  6. Step 6: Final answer
    x = 459,628,618.16

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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.