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Finding the Fourth Proportional to 618,919.20, 928,249.20 and 303,602.40

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Solution

The fourth proportional to 618,919.20, 928,249.20 and 303,602.40 is: 455,340.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,919.20 : 928,249.20 = 303,602.40 : x
  2. Step 2: Convert to fraction form
    618,919.20/928,249.20 = 303,602.40/x
  3. Step 3: Cross multiply
    618,919.20x = 928,249.20 × 303,602.40
  4. Step 4: Simplify right side
    618,919.20x = 281,818,684,918.08
  5. Step 5: Solve for x
    x = 281,818,684,918.08/618,919.20
  6. Step 6: Final answer
    x = 455,340.03

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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.