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Finding the Fourth Proportional to 605,474.16, 908,210.70 and 285,551.40

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Solution

The fourth proportional to 605,474.16, 908,210.70 and 285,551.40 is: 428,326.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,474.16 : 908,210.70 = 285,551.40 : x
  2. Step 2: Convert to fraction form
    605,474.16/908,210.70 = 285,551.40/x
  3. Step 3: Cross multiply
    605,474.16x = 908,210.70 × 285,551.40
  4. Step 4: Simplify right side
    605,474.16x = 259,340,836,879.98
  5. Step 5: Solve for x
    x = 259,340,836,879.98/605,474.16
  6. Step 6: Final answer
    x = 428,326.85

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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.