Home / 921,571.62-1,271,765.91-513,668.85

Finding the Fourth Proportional to 921,571.62, 1,271,765.91 and 513,668.85

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Solution

The fourth proportional to 921,571.62, 1,271,765.91 and 513,668.85 is: 708,861.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,571.62 : 1,271,765.91 = 513,668.85 : x
  2. Step 2: Convert to fraction form
    921,571.62/1,271,765.91 = 513,668.85/x
  3. Step 3: Cross multiply
    921,571.62x = 1,271,765.91 × 513,668.85
  4. Step 4: Simplify right side
    921,571.62x = 653,266,532,458.90
  5. Step 5: Solve for x
    x = 653,266,532,458.90/921,571.62
  6. Step 6: Final answer
    x = 708,861.38

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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.