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Finding the Fourth Proportional to 805,443.81, 1,208,636.82 and 300,353.73

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Solution

The fourth proportional to 805,443.81, 1,208,636.82 and 300,353.73 is: 450,706.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,443.81 : 1,208,636.82 = 300,353.73 : x
  2. Step 2: Convert to fraction form
    805,443.81/1,208,636.82 = 300,353.73/x
  3. Step 3: Cross multiply
    805,443.81x = 1,208,636.82 × 300,353.73
  4. Step 4: Simplify right side
    805,443.81x = 363,018,577,102.34
  5. Step 5: Solve for x
    x = 363,018,577,102.34/805,443.81
  6. Step 6: Final answer
    x = 450,706.27

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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.