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Finding the Fourth Proportional to 673,680.16, 929,676.72 and 371,872

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Solution

The fourth proportional to 673,680.16, 929,676.72 and 371,872 is: 513,182.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,680.16 : 929,676.72 = 371,872 : x
  2. Step 2: Convert to fraction form
    673,680.16/929,676.72 = 371,872/x
  3. Step 3: Cross multiply
    673,680.16x = 929,676.72 × 371,872
  4. Step 4: Simplify right side
    673,680.16x = 345,720,741,219.84
  5. Step 5: Solve for x
    x = 345,720,741,219.84/673,680.16
  6. Step 6: Final answer
    x = 513,182.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.