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Finding the Fourth Proportional to 620,636.60, 930,954.90 and 305,028.20

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Solution

The fourth proportional to 620,636.60, 930,954.90 and 305,028.20 is: 457,542.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,636.60 : 930,954.90 = 305,028.20 : x
  2. Step 2: Convert to fraction form
    620,636.60/930,954.90 = 305,028.20/x
  3. Step 3: Cross multiply
    620,636.60x = 930,954.90 × 305,028.20
  4. Step 4: Simplify right side
    620,636.60x = 283,967,497,428.18
  5. Step 5: Solve for x
    x = 283,967,497,428.18/620,636.60
  6. Step 6: Final answer
    x = 457,542.30

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Similar ratio
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1.5x scale

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.