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Finding the Fourth Proportional to 863,507.64, 1,295,548.20 and 383,668.68

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Solution

The fourth proportional to 863,507.64, 1,295,548.20 and 383,668.68 is: 575,630.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,507.64 : 1,295,548.20 = 383,668.68 : x
  2. Step 2: Convert to fraction form
    863,507.64/1,295,548.20 = 383,668.68/x
  3. Step 3: Cross multiply
    863,507.64x = 1,295,548.20 × 383,668.68
  4. Step 4: Simplify right side
    863,507.64x = 497,061,267,770.38
  5. Step 5: Solve for x
    x = 497,061,267,770.38/863,507.64
  6. Step 6: Final answer
    x = 575,630.42

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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.