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Finding the Fourth Proportional to 647,018.64, 892,889.26 and 375,247.67

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Solution

The fourth proportional to 647,018.64, 892,889.26 and 375,247.67 is: 517,843.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,018.64 : 892,889.26 = 375,247.67 : x
  2. Step 2: Convert to fraction form
    647,018.64/892,889.26 = 375,247.67/x
  3. Step 3: Cross multiply
    647,018.64x = 892,889.26 × 375,247.67
  4. Step 4: Simplify right side
    647,018.64x = 335,054,608,980.46
  5. Step 5: Solve for x
    x = 335,054,608,980.46/647,018.64
  6. Step 6: Final answer
    x = 517,843.83

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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.