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Finding the Fourth Proportional to 492,647.45, 679,795.72 and 277,774.70

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Solution

The fourth proportional to 492,647.45, 679,795.72 and 277,774.70 is: 383,296.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,647.45 : 679,795.72 = 277,774.70 : x
  2. Step 2: Convert to fraction form
    492,647.45/679,795.72 = 277,774.70/x
  3. Step 3: Cross multiply
    492,647.45x = 679,795.72 × 277,774.70
  4. Step 4: Simplify right side
    492,647.45x = 188,830,048,090.87
  5. Step 5: Solve for x
    x = 188,830,048,090.87/492,647.45
  6. Step 6: Final answer
    x = 383,296.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.