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Finding the Fourth Proportional to 7,099,899.78, 9,798,549.84 and 4,200,222.90

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Solution

The fourth proportional to 7,099,899.78, 9,798,549.84 and 4,200,222.90 is: 5,796,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,099,899.78 : 9,798,549.84 = 4,200,222.90 : x
  2. Step 2: Convert to fraction form
    7,099,899.78/9,798,549.84 = 4,200,222.90/x
  3. Step 3: Cross multiply
    7,099,899.78x = 9,798,549.84 × 4,200,222.90
  4. Step 4: Simplify right side
    7,099,899.78x = 41,156,093,424,759.34
  5. Step 5: Solve for x
    x = 41,156,093,424,759.34/7,099,899.78
  6. Step 6: Final answer
    x = 5,796,714.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.