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Finding the Fourth Proportional to 30,326,978.37, 45,490,464.66 and 7,297,915.67

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Solution

The fourth proportional to 30,326,978.37, 45,490,464.66 and 7,297,915.67 is: 10,946,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,326,978.37 : 45,490,464.66 = 7,297,915.67 : x
  2. Step 2: Convert to fraction form
    30,326,978.37/45,490,464.66 = 7,297,915.67/x
  3. Step 3: Cross multiply
    30,326,978.37x = 45,490,464.66 × 7,297,915.67
  4. Step 4: Simplify right side
    30,326,978.37x = 331,985,574,650,342.88
  5. Step 5: Solve for x
    x = 331,985,574,650,342.88/30,326,978.37
  6. Step 6: Final answer
    x = 10,946,872.80

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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.