Home / 679,447.09-1,019,293.22-279,869.77

Finding the Fourth Proportional to 679,447.09, 1,019,293.22 and 279,869.77

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Solution

The fourth proportional to 679,447.09, 1,019,293.22 and 279,869.77 is: 419,855.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,447.09 : 1,019,293.22 = 279,869.77 : x
  2. Step 2: Convert to fraction form
    679,447.09/1,019,293.22 = 279,869.77/x
  3. Step 3: Cross multiply
    679,447.09x = 1,019,293.22 × 279,869.77
  4. Step 4: Simplify right side
    679,447.09x = 285,269,357,644.61
  5. Step 5: Solve for x
    x = 285,269,357,644.61/679,447.09
  6. Step 6: Final answer
    x = 419,855.15

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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.