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Finding the Fourth Proportional to 624,986.64, 862,481.20 and 338,506.64

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Solution

The fourth proportional to 624,986.64, 862,481.20 and 338,506.64 is: 467,138.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,986.64 : 862,481.20 = 338,506.64 : x
  2. Step 2: Convert to fraction form
    624,986.64/862,481.20 = 338,506.64/x
  3. Step 3: Cross multiply
    624,986.64x = 862,481.20 × 338,506.64
  4. Step 4: Simplify right side
    624,986.64x = 291,955,613,075.17
  5. Step 5: Solve for x
    x = 291,955,613,075.17/624,986.64
  6. Step 6: Final answer
    x = 467,138.97

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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.