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Finding the Fourth Proportional to 1,555,766, 2,333,649 and 505,142

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Solution

The fourth proportional to 1,555,766, 2,333,649 and 505,142 is: 757,713

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,766 : 2,333,649 = 505,142 : x
  2. Step 2: Convert to fraction form
    1,555,766/2,333,649 = 505,142/x
  3. Step 3: Cross multiply
    1,555,766x = 2,333,649 × 505,142
  4. Step 4: Simplify right side
    1,555,766x = 1,178,824,123,158
  5. Step 5: Solve for x
    x = 1,178,824,123,158/1,555,766
  6. Step 6: Final answer
    x = 757,713

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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.