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Finding the Fourth Proportional to 618,673.80, 928,010.70 and 303,745.80

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Solution

The fourth proportional to 618,673.80, 928,010.70 and 303,745.80 is: 455,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,673.80 : 928,010.70 = 303,745.80 : x
  2. Step 2: Convert to fraction form
    618,673.80/928,010.70 = 303,745.80/x
  3. Step 3: Cross multiply
    618,673.80x = 928,010.70 × 303,745.80
  4. Step 4: Simplify right side
    618,673.80x = 281,879,352,480.06
  5. Step 5: Solve for x
    x = 281,879,352,480.06/618,673.80
  6. Step 6: Final answer
    x = 455,618.70

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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.