Home / 786,000.21-1,179,249.42-280,549.98

Finding the Fourth Proportional to 786,000.21, 1,179,249.42 and 280,549.98

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Solution

The fourth proportional to 786,000.21, 1,179,249.42 and 280,549.98 is: 420,913.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,000.21 : 1,179,249.42 = 280,549.98 : x
  2. Step 2: Convert to fraction form
    786,000.21/1,179,249.42 = 280,549.98/x
  3. Step 3: Cross multiply
    786,000.21x = 1,179,249.42 × 280,549.98
  4. Step 4: Simplify right side
    786,000.21x = 330,838,401,196.01
  5. Step 5: Solve for x
    x = 330,838,401,196.01/786,000.21
  6. Step 6: Final answer
    x = 420,913.88

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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.