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Finding the Fourth Proportional to 449,830.73, 620,364.36 and 373,228.57

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Solution

The fourth proportional to 449,830.73, 620,364.36 and 373,228.57 is: 514,721.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,830.73 : 620,364.36 = 373,228.57 : x
  2. Step 2: Convert to fraction form
    449,830.73/620,364.36 = 373,228.57/x
  3. Step 3: Cross multiply
    449,830.73x = 620,364.36 × 373,228.57
  4. Step 4: Simplify right side
    449,830.73x = 231,537,699,859.94
  5. Step 5: Solve for x
    x = 231,537,699,859.94/449,830.73
  6. Step 6: Final answer
    x = 514,721.84

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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.