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Finding the Fourth Proportional to 512,663.69, 768,326.68 and 370,986.19

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Solution

The fourth proportional to 512,663.69, 768,326.68 and 370,986.19 is: 555,995.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,663.69 : 768,326.68 = 370,986.19 : x
  2. Step 2: Convert to fraction form
    512,663.69/768,326.68 = 370,986.19/x
  3. Step 3: Cross multiply
    512,663.69x = 768,326.68 × 370,986.19
  4. Step 4: Simplify right side
    512,663.69x = 285,038,587,688.55
  5. Step 5: Solve for x
    x = 285,038,587,688.55/512,663.69
  6. Step 6: Final answer
    x = 555,995.27

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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.