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Finding the Fourth Proportional to 546,879.70, 820,319.55 and 489,306.93

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Solution

The fourth proportional to 546,879.70, 820,319.55 and 489,306.93 is: 733,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,879.70 : 820,319.55 = 489,306.93 : x
  2. Step 2: Convert to fraction form
    546,879.70/820,319.55 = 489,306.93/x
  3. Step 3: Cross multiply
    546,879.70x = 820,319.55 × 489,306.93
  4. Step 4: Simplify right side
    546,879.70x = 401,388,040,629.48
  5. Step 5: Solve for x
    x = 401,388,040,629.48/546,879.70
  6. Step 6: Final answer
    x = 733,960.40

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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.