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Finding the Fourth Proportional to 602,615.22, 831,606.72 and 330,687.66

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Solution

The fourth proportional to 602,615.22, 831,606.72 and 330,687.66 is: 456,347.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,615.22 : 831,606.72 = 330,687.66 : x
  2. Step 2: Convert to fraction form
    602,615.22/831,606.72 = 330,687.66/x
  3. Step 3: Cross multiply
    602,615.22x = 831,606.72 × 330,687.66
  4. Step 4: Simplify right side
    602,615.22x = 275,002,080,277.08
  5. Step 5: Solve for x
    x = 275,002,080,277.08/602,615.22
  6. Step 6: Final answer
    x = 456,347.72

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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.