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Finding the Fourth Proportional to 1,784,822.64, 2,678,297.79 and 647,673.57

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Solution

The fourth proportional to 1,784,822.64, 2,678,297.79 and 647,673.57 is: 971,896.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784,822.64 : 2,678,297.79 = 647,673.57 : x
  2. Step 2: Convert to fraction form
    1,784,822.64/2,678,297.79 = 647,673.57/x
  3. Step 3: Cross multiply
    1,784,822.64x = 2,678,297.79 × 647,673.57
  4. Step 4: Simplify right side
    1,784,822.64x = 1,734,662,691,172.41
  5. Step 5: Solve for x
    x = 1,734,662,691,172.41/1,784,822.64
  6. Step 6: Final answer
    x = 971,896.40

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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.