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Finding the Fourth Proportional to 605,475.16, 908,212.20 and 285,552.40

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Solution

The fourth proportional to 605,475.16, 908,212.20 and 285,552.40 is: 428,328.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,475.16 : 908,212.20 = 285,552.40 : x
  2. Step 2: Convert to fraction form
    605,475.16/908,212.20 = 285,552.40/x
  3. Step 3: Cross multiply
    605,475.16x = 908,212.20 × 285,552.40
  4. Step 4: Simplify right side
    605,475.16x = 259,342,173,419.28
  5. Step 5: Solve for x
    x = 259,342,173,419.28/605,475.16
  6. Step 6: Final answer
    x = 428,328.35

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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.