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Finding the Fourth Proportional to 1,764,750.36, 2,647,420.74 and 1,385,655.78

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Solution

The fourth proportional to 1,764,750.36, 2,647,420.74 and 1,385,655.78 is: 2,078,715.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,764,750.36 : 2,647,420.74 = 1,385,655.78 : x
  2. Step 2: Convert to fraction form
    1,764,750.36/2,647,420.74 = 1,385,655.78/x
  3. Step 3: Cross multiply
    1,764,750.36x = 2,647,420.74 × 1,385,655.78
  4. Step 4: Simplify right side
    1,764,750.36x = 3,668,413,850,472.88
  5. Step 5: Solve for x
    x = 3,668,413,850,472.88/1,764,750.36
  6. Step 6: Final answer
    x = 2,078,715.46

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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.