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Finding the Fourth Proportional to 2,986,512.86, 4,479,787.14 and 742,650.86

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Solution

The fourth proportional to 2,986,512.86, 4,479,787.14 and 742,650.86 is: 1,113,980.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986,512.86 : 4,479,787.14 = 742,650.86 : x
  2. Step 2: Convert to fraction form
    2,986,512.86/4,479,787.14 = 742,650.86/x
  3. Step 3: Cross multiply
    2,986,512.86x = 4,479,787.14 × 742,650.86
  4. Step 4: Simplify right side
    2,986,512.86x = 3,326,917,772,137.94
  5. Step 5: Solve for x
    x = 3,326,917,772,137.94/2,986,512.86
  6. Step 6: Final answer
    x = 1,113,980.73

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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.