Home / 812,723.04-1,219,198.86-339,300.72

Finding the Fourth Proportional to 812,723.04, 1,219,198.86 and 339,300.72

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Solution

The fourth proportional to 812,723.04, 1,219,198.86 and 339,300.72 is: 508,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,723.04 : 1,219,198.86 = 339,300.72 : x
  2. Step 2: Convert to fraction form
    812,723.04/1,219,198.86 = 339,300.72/x
  3. Step 3: Cross multiply
    812,723.04x = 1,219,198.86 × 339,300.72
  4. Step 4: Simplify right side
    812,723.04x = 413,675,051,021.18
  5. Step 5: Solve for x
    x = 413,675,051,021.18/812,723.04
  6. Step 6: Final answer
    x = 508,998.80

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1.5x scale

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.