Home / 817,939-1,227,020.28-285,381.82

Finding the Fourth Proportional to 817,939, 1,227,020.28 and 285,381.82

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Solution

The fourth proportional to 817,939, 1,227,020.28 and 285,381.82 is: 428,111.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,939 : 1,227,020.28 = 285,381.82 : x
  2. Step 2: Convert to fraction form
    817,939/1,227,020.28 = 285,381.82/x
  3. Step 3: Cross multiply
    817,939x = 1,227,020.28 × 285,381.82
  4. Step 4: Simplify right side
    817,939x = 350,169,280,683.31
  5. Step 5: Solve for x
    x = 350,169,280,683.31/817,939
  6. Step 6: Final answer
    x = 428,111.73

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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.