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Finding the Fourth Proportional to 2,085,391.20, 2,912,461.80 and 2,085,391.20

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Solution

The fourth proportional to 2,085,391.20, 2,912,461.80 and 2,085,391.20 is: 2,912,461.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085,391.20 : 2,912,461.80 = 2,085,391.20 : x
  2. Step 2: Convert to fraction form
    2,085,391.20/2,912,461.80 = 2,085,391.20/x
  3. Step 3: Cross multiply
    2,085,391.20x = 2,912,461.80 × 2,085,391.20
  4. Step 4: Simplify right side
    2,085,391.20x = 6,073,622,208,056.16
  5. Step 5: Solve for x
    x = 6,073,622,208,056.16/2,085,391.20
  6. Step 6: Final answer
    x = 2,912,461.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.