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Finding the Fourth Proportional to 6,379,345.72, 8,803,709.70 and 3,478,895.32

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Solution

The fourth proportional to 6,379,345.72, 8,803,709.70 and 3,478,895.32 is: 4,800,991.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379,345.72 : 8,803,709.70 = 3,478,895.32 : x
  2. Step 2: Convert to fraction form
    6,379,345.72/8,803,709.70 = 3,478,895.32/x
  3. Step 3: Cross multiply
    6,379,345.72x = 8,803,709.70 × 3,478,895.32
  4. Step 4: Simplify right side
    6,379,345.72x = 30,627,184,473,968.60
  5. Step 5: Solve for x
    x = 30,627,184,473,968.60/6,379,345.72
  6. Step 6: Final answer
    x = 4,800,991.48

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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.