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Finding the Fourth Proportional to 620,633.40, 931,122.90 and 305,100.60

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Solution

The fourth proportional to 620,633.40, 931,122.90 and 305,100.60 is: 457,735.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,633.40 : 931,122.90 = 305,100.60 : x
  2. Step 2: Convert to fraction form
    620,633.40/931,122.90 = 305,100.60/x
  3. Step 3: Cross multiply
    620,633.40x = 931,122.90 × 305,100.60
  4. Step 4: Simplify right side
    620,633.40x = 284,086,155,463.74
  5. Step 5: Solve for x
    x = 284,086,155,463.74/620,633.40
  6. Step 6: Final answer
    x = 457,735.85

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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.