Home / 665,819.64-918,213.49-423,849.96

Finding the Fourth Proportional to 665,819.64, 918,213.49 and 423,849.96

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Solution

The fourth proportional to 665,819.64, 918,213.49 and 423,849.96 is: 584,519.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,819.64 : 918,213.49 = 423,849.96 : x
  2. Step 2: Convert to fraction form
    665,819.64/918,213.49 = 423,849.96/x
  3. Step 3: Cross multiply
    665,819.64x = 918,213.49 × 423,849.96
  4. Step 4: Simplify right side
    665,819.64x = 389,184,745,357.27
  5. Step 5: Solve for x
    x = 389,184,745,357.27/665,819.64
  6. Step 6: Final answer
    x = 584,519.78

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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.