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Finding the Fourth Proportional to 1,267,809.84, 1,890,540.54 and 1,256,439.60

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Solution

The fourth proportional to 1,267,809.84, 1,890,540.54 and 1,256,439.60 is: 1,873,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267,809.84 : 1,890,540.54 = 1,256,439.60 : x
  2. Step 2: Convert to fraction form
    1,267,809.84/1,890,540.54 = 1,256,439.60/x
  3. Step 3: Cross multiply
    1,267,809.84x = 1,890,540.54 × 1,256,439.60
  4. Step 4: Simplify right side
    1,267,809.84x = 2,375,349,999,861.38
  5. Step 5: Solve for x
    x = 2,375,349,999,861.38/1,267,809.84
  6. Step 6: Final answer
    x = 1,873,585.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.