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Finding the Fourth Proportional to 546,876.70, 820,315.05 and 489,303.93

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Solution

The fourth proportional to 546,876.70, 820,315.05 and 489,303.93 is: 733,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,876.70 : 820,315.05 = 489,303.93 : x
  2. Step 2: Convert to fraction form
    546,876.70/820,315.05 = 489,303.93/x
  3. Step 3: Cross multiply
    546,876.70x = 820,315.05 × 489,303.93
  4. Step 4: Simplify right side
    546,876.70x = 401,383,377,803.15
  5. Step 5: Solve for x
    x = 401,383,377,803.15/546,876.70
  6. Step 6: Final answer
    x = 733,955.90

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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.