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Finding the Fourth Proportional to 3,791,347,872.72, 5,687,271,345.78 and 993,384,928.32

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Solution

The fourth proportional to 3,791,347,872.72, 5,687,271,345.78 and 993,384,928.32 is: 1,490,142,774.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791,347,872.72 : 5,687,271,345.78 = 993,384,928.32 : x
  2. Step 2: Convert to fraction form
    3,791,347,872.72/5,687,271,345.78 = 993,384,928.32/x
  3. Step 3: Cross multiply
    3,791,347,872.72x = 5,687,271,345.78 × 993,384,928.32
  4. Step 4: Simplify right side
    3,791,347,872.72x = 5,649,649,638,164,055,040
  5. Step 5: Solve for x
    x = 5,649,649,638,164,055,040/3,791,347,872.72
  6. Step 6: Final answer
    x = 1,490,142,774.50

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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.