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Finding the Fourth Proportional to 1,178,296, 1,626,048.48 and 641,752

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Solution

The fourth proportional to 1,178,296, 1,626,048.48 and 641,752 is: 885,617.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,296 : 1,626,048.48 = 641,752 : x
  2. Step 2: Convert to fraction form
    1,178,296/1,626,048.48 = 641,752/x
  3. Step 3: Cross multiply
    1,178,296x = 1,626,048.48 × 641,752
  4. Step 4: Simplify right side
    1,178,296x = 1,043,519,864,136.96
  5. Step 5: Solve for x
    x = 1,043,519,864,136.96/1,178,296
  6. Step 6: Final answer
    x = 885,617.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.