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Finding the Fourth Proportional to 638,013.62, 880,478.74 and 366,131.25

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Solution

The fourth proportional to 638,013.62, 880,478.74 and 366,131.25 is: 505,272.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,013.62 : 880,478.74 = 366,131.25 : x
  2. Step 2: Convert to fraction form
    638,013.62/880,478.74 = 366,131.25/x
  3. Step 3: Cross multiply
    638,013.62x = 880,478.74 × 366,131.25
  4. Step 4: Simplify right side
    638,013.62x = 322,370,782,598.15
  5. Step 5: Solve for x
    x = 322,370,782,598.15/638,013.62
  6. Step 6: Final answer
    x = 505,272.57

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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.