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Finding the Fourth Proportional to 905,065.92, 1,355,978.88 and 604,636.56

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Solution

The fourth proportional to 905,065.92, 1,355,978.88 and 604,636.56 is: 905,872.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,065.92 : 1,355,978.88 = 604,636.56 : x
  2. Step 2: Convert to fraction form
    905,065.92/1,355,978.88 = 604,636.56/x
  3. Step 3: Cross multiply
    905,065.92x = 1,355,978.88 × 604,636.56
  4. Step 4: Simplify right side
    905,065.92x = 819,874,405,435.85
  5. Step 5: Solve for x
    x = 819,874,405,435.85/905,065.92
  6. Step 6: Final answer
    x = 905,872.59

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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.