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Finding the Fourth Proportional to 994,938.40, 1,489,232.40 and 784,986.40

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Solution

The fourth proportional to 994,938.40, 1,489,232.40 and 784,986.40 is: 1,174,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,938.40 : 1,489,232.40 = 784,986.40 : x
  2. Step 2: Convert to fraction form
    994,938.40/1,489,232.40 = 784,986.40/x
  3. Step 3: Cross multiply
    994,938.40x = 1,489,232.40 × 784,986.40
  4. Step 4: Simplify right side
    994,938.40x = 1,169,027,180,439.36
  5. Step 5: Solve for x
    x = 1,169,027,180,439.36/994,938.40
  6. Step 6: Final answer
    x = 1,174,974.43

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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.