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Finding the Fourth Proportional to 5,661,806.64, 8,485,627.71 and 4,458,978.51

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Solution

The fourth proportional to 5,661,806.64, 8,485,627.71 and 4,458,978.51 is: 6,682,890.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661,806.64 : 8,485,627.71 = 4,458,978.51 : x
  2. Step 2: Convert to fraction form
    5,661,806.64/8,485,627.71 = 4,458,978.51/x
  3. Step 3: Cross multiply
    5,661,806.64x = 8,485,627.71 × 4,458,978.51
  4. Step 4: Simplify right side
    5,661,806.64x = 37,837,231,602,750.52
  5. Step 5: Solve for x
    x = 37,837,231,602,750.52/5,661,806.64
  6. Step 6: Final answer
    x = 6,682,890.11

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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.