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Finding the Fourth Proportional to 805,709.71, 1,209,096.96 and 379,367.47

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Solution

The fourth proportional to 805,709.71, 1,209,096.96 and 379,367.47 is: 569,301.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,709.71 : 1,209,096.96 = 379,367.47 : x
  2. Step 2: Convert to fraction form
    805,709.71/1,209,096.96 = 379,367.47/x
  3. Step 3: Cross multiply
    805,709.71x = 1,209,096.96 × 379,367.47
  4. Step 4: Simplify right side
    805,709.71x = 458,692,054,699.89
  5. Step 5: Solve for x
    x = 458,692,054,699.89/805,709.71
  6. Step 6: Final answer
    x = 569,301.88

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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.