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Finding the Fourth Proportional to 620,400.70, 930,601.05 and 265,450.60

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Solution

The fourth proportional to 620,400.70, 930,601.05 and 265,450.60 is: 398,175.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,400.70 : 930,601.05 = 265,450.60 : x
  2. Step 2: Convert to fraction form
    620,400.70/930,601.05 = 265,450.60/x
  3. Step 3: Cross multiply
    620,400.70x = 930,601.05 × 265,450.60
  4. Step 4: Simplify right side
    620,400.70x = 247,028,607,083.13
  5. Step 5: Solve for x
    x = 247,028,607,083.13/620,400.70
  6. Step 6: Final answer
    x = 398,175.90

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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.