Home / 419,927.06-579,142.83-354,834.78

Finding the Fourth Proportional to 419,927.06, 579,142.83 and 354,834.78

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Solution

The fourth proportional to 419,927.06, 579,142.83 and 354,834.78 is: 489,370.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,927.06 : 579,142.83 = 354,834.78 : x
  2. Step 2: Convert to fraction form
    419,927.06/579,142.83 = 354,834.78/x
  3. Step 3: Cross multiply
    419,927.06x = 579,142.83 × 354,834.78
  4. Step 4: Simplify right side
    419,927.06x = 205,500,018,671.63
  5. Step 5: Solve for x
    x = 205,500,018,671.63/419,927.06
  6. Step 6: Final answer
    x = 489,370.75

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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.