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Finding the Fourth Proportional to 428,630.02, 590,159.73 and 326,327.02

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Solution

The fourth proportional to 428,630.02, 590,159.73 and 326,327.02 is: 449,303.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,630.02 : 590,159.73 = 326,327.02 : x
  2. Step 2: Convert to fraction form
    428,630.02/590,159.73 = 326,327.02/x
  3. Step 3: Cross multiply
    428,630.02x = 590,159.73 × 326,327.02
  4. Step 4: Simplify right side
    428,630.02x = 192,585,066,014.91
  5. Step 5: Solve for x
    x = 192,585,066,014.91/428,630.02
  6. Step 6: Final answer
    x = 449,303.73

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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.