Home / 3,138,865.70-4,708,353.18-864,378.42

Finding the Fourth Proportional to 3,138,865.70, 4,708,353.18 and 864,378.42

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Solution

The fourth proportional to 3,138,865.70, 4,708,353.18 and 864,378.42 is: 1,296,582.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138,865.70 : 4,708,353.18 = 864,378.42 : x
  2. Step 2: Convert to fraction form
    3,138,865.70/4,708,353.18 = 864,378.42/x
  3. Step 3: Cross multiply
    3,138,865.70x = 4,708,353.18 × 864,378.42
  4. Step 4: Simplify right side
    3,138,865.70x = 4,069,798,882,530.38
  5. Step 5: Solve for x
    x = 4,069,798,882,530.38/3,138,865.70
  6. Step 6: Final answer
    x = 1,296,582.67

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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.