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Finding the Fourth Proportional to 602,354.88, 831,257.46 and 330,405

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Solution

The fourth proportional to 602,354.88, 831,257.46 and 330,405 is: 455,963.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,354.88 : 831,257.46 = 330,405 : x
  2. Step 2: Convert to fraction form
    602,354.88/831,257.46 = 330,405/x
  3. Step 3: Cross multiply
    602,354.88x = 831,257.46 × 330,405
  4. Step 4: Simplify right side
    602,354.88x = 274,651,621,071.30
  5. Step 5: Solve for x
    x = 274,651,621,071.30/602,354.88
  6. Step 6: Final answer
    x = 455,963.14

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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.