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Finding the Fourth Proportional to 919,692.30, 1,379,538.45 and 919,692.30

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Solution

The fourth proportional to 919,692.30, 1,379,538.45 and 919,692.30 is: 1,379,538.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,692.30 : 1,379,538.45 = 919,692.30 : x
  2. Step 2: Convert to fraction form
    919,692.30/1,379,538.45 = 919,692.30/x
  3. Step 3: Cross multiply
    919,692.30x = 1,379,538.45 × 919,692.30
  4. Step 4: Simplify right side
    919,692.30x = 1,268,750,890,018.94
  5. Step 5: Solve for x
    x = 1,268,750,890,018.94/919,692.30
  6. Step 6: Final answer
    x = 1,379,538.45

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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.