Home / 899,187.20-1,240,863.84-491,280.28

Finding the Fourth Proportional to 899,187.20, 1,240,863.84 and 491,280.28

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Solution

The fourth proportional to 899,187.20, 1,240,863.84 and 491,280.28 is: 677,958.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,187.20 : 1,240,863.84 = 491,280.28 : x
  2. Step 2: Convert to fraction form
    899,187.20/1,240,863.84 = 491,280.28/x
  3. Step 3: Cross multiply
    899,187.20x = 1,240,863.84 × 491,280.28
  4. Step 4: Simplify right side
    899,187.20x = 609,611,934,757.08
  5. Step 5: Solve for x
    x = 609,611,934,757.08/899,187.20
  6. Step 6: Final answer
    x = 677,958.87

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Double scale
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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.