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Finding the Fourth Proportional to 579,872.81, 800,574.41 and 379,018.73

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Solution

The fourth proportional to 579,872.81, 800,574.41 and 379,018.73 is: 523,274.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,872.81 : 800,574.41 = 379,018.73 : x
  2. Step 2: Convert to fraction form
    579,872.81/800,574.41 = 379,018.73/x
  3. Step 3: Cross multiply
    579,872.81x = 800,574.41 × 379,018.73
  4. Step 4: Simplify right side
    579,872.81x = 303,432,699,097.68
  5. Step 5: Solve for x
    x = 303,432,699,097.68/579,872.81
  6. Step 6: Final answer
    x = 523,274.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.