Home / 789,958.08-1,090,139.16-427,380.76

Finding the Fourth Proportional to 789,958.08, 1,090,139.16 and 427,380.76

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Solution

The fourth proportional to 789,958.08, 1,090,139.16 and 427,380.76 is: 589,783.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,958.08 : 1,090,139.16 = 427,380.76 : x
  2. Step 2: Convert to fraction form
    789,958.08/1,090,139.16 = 427,380.76/x
  3. Step 3: Cross multiply
    789,958.08x = 1,090,139.16 × 427,380.76
  4. Step 4: Simplify right side
    789,958.08x = 465,904,502,706.56
  5. Step 5: Solve for x
    x = 465,904,502,706.56/789,958.08
  6. Step 6: Final answer
    x = 589,783.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.