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Finding the Fourth Proportional to 2,784,683.78, 4,177,028.89 and 762,945.24

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Solution

The fourth proportional to 2,784,683.78, 4,177,028.89 and 762,945.24 is: 1,144,418.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784,683.78 : 4,177,028.89 = 762,945.24 : x
  2. Step 2: Convert to fraction form
    2,784,683.78/4,177,028.89 = 762,945.24/x
  3. Step 3: Cross multiply
    2,784,683.78x = 4,177,028.89 × 762,945.24
  4. Step 4: Simplify right side
    2,784,683.78x = 3,186,844,308,967.98
  5. Step 5: Solve for x
    x = 3,186,844,308,967.98/2,784,683.78
  6. Step 6: Final answer
    x = 1,144,418.74

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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.