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Finding the Fourth Proportional to 863,609.80, 1,295,414.70 and 302,571.40

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Solution

The fourth proportional to 863,609.80, 1,295,414.70 and 302,571.40 is: 453,857.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,609.80 : 1,295,414.70 = 302,571.40 : x
  2. Step 2: Convert to fraction form
    863,609.80/1,295,414.70 = 302,571.40/x
  3. Step 3: Cross multiply
    863,609.80x = 1,295,414.70 × 302,571.40
  4. Step 4: Simplify right side
    863,609.80x = 391,955,439,359.58
  5. Step 5: Solve for x
    x = 391,955,439,359.58/863,609.80
  6. Step 6: Final answer
    x = 453,857.10

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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.