Home / 838,759,828.09-1,258,321,354.72-321,190,287.02

Finding the Fourth Proportional to 838,759,828.09, 1,258,321,354.72 and 321,190,287.02

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Solution

The fourth proportional to 838,759,828.09, 1,258,321,354.72 and 321,190,287.02 is: 481,854,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,759,828.09 : 1,258,321,354.72 = 321,190,287.02 : x
  2. Step 2: Convert to fraction form
    838,759,828.09/1,258,321,354.72 = 321,190,287.02/x
  3. Step 3: Cross multiply
    838,759,828.09x = 1,258,321,354.72 × 321,190,287.02
  4. Step 4: Simplify right side
    838,759,828.09x = 404,160,597,085,912,000
  5. Step 5: Solve for x
    x = 404,160,597,085,912,000/838,759,828.09
  6. Step 6: Final answer
    x = 481,854,976.30

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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.