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Finding the Fourth Proportional to 3,099,927.60, 4,649,978.64 and 856,065.60

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Solution

The fourth proportional to 3,099,927.60, 4,649,978.64 and 856,065.60 is: 1,284,122.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,099,927.60 : 4,649,978.64 = 856,065.60 : x
  2. Step 2: Convert to fraction form
    3,099,927.60/4,649,978.64 = 856,065.60/x
  3. Step 3: Cross multiply
    3,099,927.60x = 4,649,978.64 × 856,065.60
  4. Step 4: Simplify right side
    3,099,927.60x = 3,980,686,754,438.78
  5. Step 5: Solve for x
    x = 3,980,686,754,438.78/3,099,927.60
  6. Step 6: Final answer
    x = 1,284,122.49

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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.