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Finding the Fourth Proportional to 7,807,978.52, 10,775,007.96 and 4,370,218.64

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Solution

The fourth proportional to 7,807,978.52, 10,775,007.96 and 4,370,218.64 is: 6,030,900.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807,978.52 : 10,775,007.96 = 4,370,218.64 : x
  2. Step 2: Convert to fraction form
    7,807,978.52/10,775,007.96 = 4,370,218.64/x
  3. Step 3: Cross multiply
    7,807,978.52x = 10,775,007.96 × 4,370,218.64
  4. Step 4: Simplify right side
    7,807,978.52x = 47,089,140,632,940.38
  5. Step 5: Solve for x
    x = 47,089,140,632,940.38/7,807,978.52
  6. Step 6: Final answer
    x = 6,030,900.38

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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.