Home / 899,193.72-1,240,872.66-491,286.78

Finding the Fourth Proportional to 899,193.72, 1,240,872.66 and 491,286.78

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Solution

The fourth proportional to 899,193.72, 1,240,872.66 and 491,286.78 is: 677,967.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,193.72 : 1,240,872.66 = 491,286.78 : x
  2. Step 2: Convert to fraction form
    899,193.72/1,240,872.66 = 491,286.78/x
  3. Step 3: Cross multiply
    899,193.72x = 1,240,872.66 × 491,286.78
  4. Step 4: Simplify right side
    899,193.72x = 609,624,333,521.44
  5. Step 5: Solve for x
    x = 609,624,333,521.44/899,193.72
  6. Step 6: Final answer
    x = 677,967.74

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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.