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Finding the Fourth Proportional to 492,186.24, 679,223.36 and 290,980.48

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Solution

The fourth proportional to 492,186.24, 679,223.36 and 290,980.48 is: 401,556.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,186.24 : 679,223.36 = 290,980.48 : x
  2. Step 2: Convert to fraction form
    492,186.24/679,223.36 = 290,980.48/x
  3. Step 3: Cross multiply
    492,186.24x = 679,223.36 × 290,980.48
  4. Step 4: Simplify right side
    492,186.24x = 197,640,739,320.01
  5. Step 5: Solve for x
    x = 197,640,739,320.01/492,186.24
  6. Step 6: Final answer
    x = 401,556.82

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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.