Home / 699,332.20-965,077.05-393,408.82

Finding the Fourth Proportional to 699,332.20, 965,077.05 and 393,408.82

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Solution

The fourth proportional to 699,332.20, 965,077.05 and 393,408.82 is: 542,903.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,332.20 : 965,077.05 = 393,408.82 : x
  2. Step 2: Convert to fraction form
    699,332.20/965,077.05 = 393,408.82/x
  3. Step 3: Cross multiply
    699,332.20x = 965,077.05 × 393,408.82
  4. Step 4: Simplify right side
    699,332.20x = 379,669,823,449.58
  5. Step 5: Solve for x
    x = 379,669,823,449.58/699,332.20
  6. Step 6: Final answer
    x = 542,903.39

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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.