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Finding the Fourth Proportional to 1,000,583.55, 1,379,872.40 and 926,274.15

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Solution

The fourth proportional to 1,000,583.55, 1,379,872.40 and 926,274.15 is: 1,277,394.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,000,583.55 : 1,379,872.40 = 926,274.15 : x
  2. Step 2: Convert to fraction form
    1,000,583.55/1,379,872.40 = 926,274.15/x
  3. Step 3: Cross multiply
    1,000,583.55x = 1,379,872.40 × 926,274.15
  4. Step 4: Simplify right side
    1,000,583.55x = 1,278,140,129,787.09
  5. Step 5: Solve for x
    x = 1,278,140,129,787.09/1,000,583.55
  6. Step 6: Final answer
    x = 1,277,394.71

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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.