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Finding the Fourth Proportional to 885,737.80, 1,328,390.70 and 254,585.80

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Solution

The fourth proportional to 885,737.80, 1,328,390.70 and 254,585.80 is: 381,816.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,737.80 : 1,328,390.70 = 254,585.80 : x
  2. Step 2: Convert to fraction form
    885,737.80/1,328,390.70 = 254,585.80/x
  3. Step 3: Cross multiply
    885,737.80x = 1,328,390.70 × 254,585.80
  4. Step 4: Simplify right side
    885,737.80x = 338,189,409,072.06
  5. Step 5: Solve for x
    x = 338,189,409,072.06/885,737.80
  6. Step 6: Final answer
    x = 381,816.62

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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.