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Finding the Fourth Proportional to 507,519.27, 700,399.85 and 289,786.88

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Solution

The fourth proportional to 507,519.27, 700,399.85 and 289,786.88 is: 399,919.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,519.27 : 700,399.85 = 289,786.88 : x
  2. Step 2: Convert to fraction form
    507,519.27/700,399.85 = 289,786.88/x
  3. Step 3: Cross multiply
    507,519.27x = 700,399.85 × 289,786.88
  4. Step 4: Simplify right side
    507,519.27x = 202,966,687,586.03
  5. Step 5: Solve for x
    x = 202,966,687,586.03/507,519.27
  6. Step 6: Final answer
    x = 399,919.17

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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.