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Finding the Fourth Proportional to 6,379,337.72, 8,803,698.64 and 3,478,887.30

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Solution

The fourth proportional to 6,379,337.72, 8,803,698.64 and 3,478,887.30 is: 4,800,980.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379,337.72 : 8,803,698.64 = 3,478,887.30 : x
  2. Step 2: Convert to fraction form
    6,379,337.72/8,803,698.64 = 3,478,887.30/x
  3. Step 3: Cross multiply
    6,379,337.72x = 8,803,698.64 × 3,478,887.30
  4. Step 4: Simplify right side
    6,379,337.72x = 30,627,075,391,723.27
  5. Step 5: Solve for x
    x = 30,627,075,391,723.27/6,379,337.72
  6. Step 6: Final answer
    x = 4,800,980.41

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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.