Home / 684,859.27-945,133.65-378,930.67

Finding the Fourth Proportional to 684,859.27, 945,133.65 and 378,930.67

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Solution

The fourth proportional to 684,859.27, 945,133.65 and 378,930.67 is: 522,939.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,859.27 : 945,133.65 = 378,930.67 : x
  2. Step 2: Convert to fraction form
    684,859.27/945,133.65 = 378,930.67/x
  3. Step 3: Cross multiply
    684,859.27x = 945,133.65 × 378,930.67
  4. Step 4: Simplify right side
    684,859.27x = 358,140,129,121.85
  5. Step 5: Solve for x
    x = 358,140,129,121.85/684,859.27
  6. Step 6: Final answer
    x = 522,939.74

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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.