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Finding the Fourth Proportional to 1,329,176, 1,993,764 and 395,288

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Solution

The fourth proportional to 1,329,176, 1,993,764 and 395,288 is: 592,932

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,176 : 1,993,764 = 395,288 : x
  2. Step 2: Convert to fraction form
    1,329,176/1,993,764 = 395,288/x
  3. Step 3: Cross multiply
    1,329,176x = 1,993,764 × 395,288
  4. Step 4: Simplify right side
    1,329,176x = 788,110,984,032
  5. Step 5: Solve for x
    x = 788,110,984,032/1,329,176
  6. Step 6: Final answer
    x = 592,932

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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.