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Finding the Fourth Proportional to 673,913.43, 929,995.97 and 372,107.43

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Solution

The fourth proportional to 673,913.43, 929,995.97 and 372,107.43 is: 513,505.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,913.43 : 929,995.97 = 372,107.43 : x
  2. Step 2: Convert to fraction form
    673,913.43/929,995.97 = 372,107.43/x
  3. Step 3: Cross multiply
    673,913.43x = 929,995.97 × 372,107.43
  4. Step 4: Simplify right side
    673,913.43x = 346,058,408,446.52
  5. Step 5: Solve for x
    x = 346,058,408,446.52/673,913.43
  6. Step 6: Final answer
    x = 513,505.73

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1.5x scale

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.