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Finding the Fourth Proportional to 660,091,962.60, 990,137,943.90 and 660,091,962.60

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Solution

The fourth proportional to 660,091,962.60, 990,137,943.90 and 660,091,962.60 is: 990,137,943.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,091,962.60 : 990,137,943.90 = 660,091,962.60 : x
  2. Step 2: Convert to fraction form
    660,091,962.60/990,137,943.90 = 660,091,962.60/x
  3. Step 3: Cross multiply
    660,091,962.60x = 990,137,943.90 × 660,091,962.60
  4. Step 4: Simplify right side
    660,091,962.60x = 653,582,098,633,679,744
  5. Step 5: Solve for x
    x = 653,582,098,633,679,744/660,091,962.60
  6. Step 6: Final answer
    x = 990,137,943.90

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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.