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Finding the Fourth Proportional to 605,683.20, 908,306.10 and 306,064.20

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Solution

The fourth proportional to 605,683.20, 908,306.10 and 306,064.20 is: 458,985.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,683.20 : 908,306.10 = 306,064.20 : x
  2. Step 2: Convert to fraction form
    605,683.20/908,306.10 = 306,064.20/x
  3. Step 3: Cross multiply
    605,683.20x = 908,306.10 × 306,064.20
  4. Step 4: Simplify right side
    605,683.20x = 277,999,979,851.62
  5. Step 5: Solve for x
    x = 277,999,979,851.62/605,683.20
  6. Step 6: Final answer
    x = 458,985.79

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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.