Home / 427,012,997.90-639,244,038.45-254,400,961.10

Finding the Fourth Proportional to 427,012,997.90, 639,244,038.45 and 254,400,961.10

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Solution

The fourth proportional to 427,012,997.90, 639,244,038.45 and 254,400,961.10 is: 380,841,563.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,012,997.90 : 639,244,038.45 = 254,400,961.10 : x
  2. Step 2: Convert to fraction form
    427,012,997.90/639,244,038.45 = 254,400,961.10/x
  3. Step 3: Cross multiply
    427,012,997.90x = 639,244,038.45 × 254,400,961.10
  4. Step 4: Simplify right side
    427,012,997.90x = 162,624,297,759,125,376
  5. Step 5: Solve for x
    x = 162,624,297,759,125,376/427,012,997.90
  6. Step 6: Final answer
    x = 380,841,563.51

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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.