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Finding the Fourth Proportional to 620,179.62, 855,795.33 and 375,255.60

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Solution

The fourth proportional to 620,179.62, 855,795.33 and 375,255.60 is: 517,820.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,179.62 : 855,795.33 = 375,255.60 : x
  2. Step 2: Convert to fraction form
    620,179.62/855,795.33 = 375,255.60/x
  3. Step 3: Cross multiply
    620,179.62x = 855,795.33 × 375,255.60
  4. Step 4: Simplify right side
    620,179.62x = 321,141,990,036.35
  5. Step 5: Solve for x
    x = 321,141,990,036.35/620,179.62
  6. Step 6: Final answer
    x = 517,820.93

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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.