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Finding the Fourth Proportional to 602,616.98, 831,609.14 and 330,689.42

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Solution

The fourth proportional to 602,616.98, 831,609.14 and 330,689.42 is: 456,350.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,616.98 : 831,609.14 = 330,689.42 : x
  2. Step 2: Convert to fraction form
    602,616.98/831,609.14 = 330,689.42/x
  3. Step 3: Cross multiply
    602,616.98x = 831,609.14 × 330,689.42
  4. Step 4: Simplify right side
    602,616.98x = 275,004,344,173.30
  5. Step 5: Solve for x
    x = 275,004,344,173.30/602,616.98
  6. Step 6: Final answer
    x = 456,350.14

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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.