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Finding the Fourth Proportional to 2,774,182, 4,161,273 and 779,638

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Solution

The fourth proportional to 2,774,182, 4,161,273 and 779,638 is: 1,169,457

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774,182 : 4,161,273 = 779,638 : x
  2. Step 2: Convert to fraction form
    2,774,182/4,161,273 = 779,638/x
  3. Step 3: Cross multiply
    2,774,182x = 4,161,273 × 779,638
  4. Step 4: Simplify right side
    2,774,182x = 3,244,286,559,174
  5. Step 5: Solve for x
    x = 3,244,286,559,174/2,774,182
  6. Step 6: Final answer
    x = 1,169,457

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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.