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Finding the Fourth Proportional to 618,974.40, 928,634.40 and 303,441.60

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Solution

The fourth proportional to 618,974.40, 928,634.40 and 303,441.60 is: 455,247.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,974.40 : 928,634.40 = 303,441.60 : x
  2. Step 2: Convert to fraction form
    618,974.40/928,634.40 = 303,441.60/x
  3. Step 3: Cross multiply
    618,974.40x = 928,634.40 × 303,441.60
  4. Step 4: Simplify right side
    618,974.40x = 281,786,308,151.04
  5. Step 5: Solve for x
    x = 281,786,308,151.04/618,974.40
  6. Step 6: Final answer
    x = 455,247.11

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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.