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Finding the Fourth Proportional to 639,577,052.70, 959,365,579.05 and 639,577,052.70

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Solution

The fourth proportional to 639,577,052.70, 959,365,579.05 and 639,577,052.70 is: 959,365,579.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,577,052.70 : 959,365,579.05 = 639,577,052.70 : x
  2. Step 2: Convert to fraction form
    639,577,052.70/959,365,579.05 = 639,577,052.70/x
  3. Step 3: Cross multiply
    639,577,052.70x = 959,365,579.05 × 639,577,052.70
  4. Step 4: Simplify right side
    639,577,052.70x = 613,588,209,510,627,840
  5. Step 5: Solve for x
    x = 613,588,209,510,627,840/639,577,052.70
  6. Step 6: Final answer
    x = 959,365,579.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.