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Finding the Fourth Proportional to 511,513.02, 705,871.78 and 282,079.98

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Solution

The fourth proportional to 511,513.02, 705,871.78 and 282,079.98 is: 389,261.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,513.02 : 705,871.78 = 282,079.98 : x
  2. Step 2: Convert to fraction form
    511,513.02/705,871.78 = 282,079.98/x
  3. Step 3: Cross multiply
    511,513.02x = 705,871.78 × 282,079.98
  4. Step 4: Simplify right side
    511,513.02x = 199,112,297,584.96
  5. Step 5: Solve for x
    x = 199,112,297,584.96/511,513.02
  6. Step 6: Final answer
    x = 389,261.45

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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.