Home / 1,775,815.20-2,663,722.80-1,638,957.60

Finding the Fourth Proportional to 1,775,815.20, 2,663,722.80 and 1,638,957.60

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Solution

The fourth proportional to 1,775,815.20, 2,663,722.80 and 1,638,957.60 is: 2,458,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775,815.20 : 2,663,722.80 = 1,638,957.60 : x
  2. Step 2: Convert to fraction form
    1,775,815.20/2,663,722.80 = 1,638,957.60/x
  3. Step 3: Cross multiply
    1,775,815.20x = 2,663,722.80 × 1,638,957.60
  4. Step 4: Simplify right side
    1,775,815.20x = 4,365,728,727,353.28
  5. Step 5: Solve for x
    x = 4,365,728,727,353.28/1,775,815.20
  6. Step 6: Final answer
    x = 2,458,436.40

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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.