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Finding the Fourth Proportional to 1,992,907,897.60, 2,989,361,846.40 and 1,992,907,897.60

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Solution

The fourth proportional to 1,992,907,897.60, 2,989,361,846.40 and 1,992,907,897.60 is: 2,989,361,846.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,907,897.60 : 2,989,361,846.40 = 1,992,907,897.60 : x
  2. Step 2: Convert to fraction form
    1,992,907,897.60/2,989,361,846.40 = 1,992,907,897.60/x
  3. Step 3: Cross multiply
    1,992,907,897.60x = 2,989,361,846.40 × 1,992,907,897.60
  4. Step 4: Simplify right side
    1,992,907,897.60x = 5,957,522,832,474,678,272
  5. Step 5: Solve for x
    x = 5,957,522,832,474,678,272/1,992,907,897.60
  6. Step 6: Final answer
    x = 2,989,361,846.40

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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.