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Finding the Fourth Proportional to 1,945,297.88, 2,684,500.78 and 1,129,702.08

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Solution

The fourth proportional to 1,945,297.88, 2,684,500.78 and 1,129,702.08 is: 1,558,982.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945,297.88 : 2,684,500.78 = 1,129,702.08 : x
  2. Step 2: Convert to fraction form
    1,945,297.88/2,684,500.78 = 1,129,702.08/x
  3. Step 3: Cross multiply
    1,945,297.88x = 2,684,500.78 × 1,129,702.08
  4. Step 4: Simplify right side
    1,945,297.88x = 3,032,686,114,927.62
  5. Step 5: Solve for x
    x = 3,032,686,114,927.62/1,945,297.88
  6. Step 6: Final answer
    x = 1,558,982.89

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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.