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Finding the Fourth Proportional to 662,942.95, 914,861.42 and 361,136.95

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Solution

The fourth proportional to 662,942.95, 914,861.42 and 361,136.95 is: 498,369.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,942.95 : 914,861.42 = 361,136.95 : x
  2. Step 2: Convert to fraction form
    662,942.95/914,861.42 = 361,136.95/x
  3. Step 3: Cross multiply
    662,942.95x = 914,861.42 × 361,136.95
  4. Step 4: Simplify right side
    662,942.95x = 330,390,260,152.89
  5. Step 5: Solve for x
    x = 330,390,260,152.89/662,942.95
  6. Step 6: Final answer
    x = 498,369.07

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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.