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Finding the Fourth Proportional to 558,662.40, 770,961.28 and 304,020.48

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Solution

The fourth proportional to 558,662.40, 770,961.28 and 304,020.48 is: 419,552.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,662.40 : 770,961.28 = 304,020.48 : x
  2. Step 2: Convert to fraction form
    558,662.40/770,961.28 = 304,020.48/x
  3. Step 3: Cross multiply
    558,662.40x = 770,961.28 × 304,020.48
  4. Step 4: Simplify right side
    558,662.40x = 234,388,018,407.01
  5. Step 5: Solve for x
    x = 234,388,018,407.01/558,662.40
  6. Step 6: Final answer
    x = 419,552.16

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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.