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Finding the Fourth Proportional to 546,811.70, 820,217.55 and 511,819.70

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Solution

The fourth proportional to 546,811.70, 820,217.55 and 511,819.70 is: 767,729.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,811.70 : 820,217.55 = 511,819.70 : x
  2. Step 2: Convert to fraction form
    546,811.70/820,217.55 = 511,819.70/x
  3. Step 3: Cross multiply
    546,811.70x = 820,217.55 × 511,819.70
  4. Step 4: Simplify right side
    546,811.70x = 419,803,500,375.74
  5. Step 5: Solve for x
    x = 419,803,500,375.74/546,811.70
  6. Step 6: Final answer
    x = 767,729.55

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1.5x scale

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.