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Finding the Fourth Proportional to 520,243.62, 718,012.41 and 305,501.22

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Solution

The fourth proportional to 520,243.62, 718,012.41 and 305,501.22 is: 421,636.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,243.62 : 718,012.41 = 305,501.22 : x
  2. Step 2: Convert to fraction form
    520,243.62/718,012.41 = 305,501.22/x
  3. Step 3: Cross multiply
    520,243.62x = 718,012.41 × 305,501.22
  4. Step 4: Simplify right side
    520,243.62x = 219,353,667,230.14
  5. Step 5: Solve for x
    x = 219,353,667,230.14/520,243.62
  6. Step 6: Final answer
    x = 421,636.44

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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.