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Finding the Fourth Proportional to 568,621.50, 784,697.67 and 342,310.74

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Solution

The fourth proportional to 568,621.50, 784,697.67 and 342,310.74 is: 472,388.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,621.50 : 784,697.67 = 342,310.74 : x
  2. Step 2: Convert to fraction form
    568,621.50/784,697.67 = 342,310.74/x
  3. Step 3: Cross multiply
    568,621.50x = 784,697.67 × 342,310.74
  4. Step 4: Simplify right side
    568,621.50x = 268,610,440,093.98
  5. Step 5: Solve for x
    x = 268,610,440,093.98/568,621.50
  6. Step 6: Final answer
    x = 472,388.82

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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.