Home / 427,012,959.40-639,243,980.70-254,400,922.60

Finding the Fourth Proportional to 427,012,959.40, 639,243,980.70 and 254,400,922.60

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Solution

The fourth proportional to 427,012,959.40, 639,243,980.70 and 254,400,922.60 is: 380,841,505.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,012,959.40 : 639,243,980.70 = 254,400,922.60 : x
  2. Step 2: Convert to fraction form
    427,012,959.40/639,243,980.70 = 254,400,922.60/x
  3. Step 3: Cross multiply
    427,012,959.40x = 639,243,980.70 × 254,400,922.60
  4. Step 4: Simplify right side
    427,012,959.40x = 162,624,258,456,576,608
  5. Step 5: Solve for x
    x = 162,624,258,456,576,608/427,012,959.40
  6. Step 6: Final answer
    x = 380,841,505.81

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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.