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Finding the Fourth Proportional to 6,448,389.89, 8,893,740.87 and 3,999,627.86

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Solution

The fourth proportional to 6,448,389.89, 8,893,740.87 and 3,999,627.86 is: 5,516,362.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,448,389.89 : 8,893,740.87 = 3,999,627.86 : x
  2. Step 2: Convert to fraction form
    6,448,389.89/8,893,740.87 = 3,999,627.86/x
  3. Step 3: Cross multiply
    6,448,389.89x = 8,893,740.87 × 3,999,627.86
  4. Step 4: Simplify right side
    6,448,389.89x = 35,571,653,718,803.93
  5. Step 5: Solve for x
    x = 35,571,653,718,803.93/6,448,389.89
  6. Step 6: Final answer
    x = 5,516,362.12

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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.