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Finding the Fourth Proportional to 638,018.75, 880,485.80 and 366,136.37

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Solution

The fourth proportional to 638,018.75, 880,485.80 and 366,136.37 is: 505,279.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,018.75 : 880,485.80 = 366,136.37 : x
  2. Step 2: Convert to fraction form
    638,018.75/880,485.80 = 366,136.37/x
  3. Step 3: Cross multiply
    638,018.75x = 880,485.80 × 366,136.37
  4. Step 4: Simplify right side
    638,018.75x = 322,377,868,415.44
  5. Step 5: Solve for x
    x = 322,377,868,415.44/638,018.75
  6. Step 6: Final answer
    x = 505,279.62

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1.5x scale

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.