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Finding the Fourth Proportional to 605,603.70, 908,405.55 and 289,898.10

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Solution

The fourth proportional to 605,603.70, 908,405.55 and 289,898.10 is: 434,847.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,603.70 : 908,405.55 = 289,898.10 : x
  2. Step 2: Convert to fraction form
    605,603.70/908,405.55 = 289,898.10/x
  3. Step 3: Cross multiply
    605,603.70x = 908,405.55 × 289,898.10
  4. Step 4: Simplify right side
    605,603.70x = 263,345,042,974.46
  5. Step 5: Solve for x
    x = 263,345,042,974.46/605,603.70
  6. Step 6: Final answer
    x = 434,847.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.