Home / 919,540.54-1,379,421.42-304,065.28

Finding the Fourth Proportional to 919,540.54, 1,379,421.42 and 304,065.28

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Solution

The fourth proportional to 919,540.54, 1,379,421.42 and 304,065.28 is: 456,134.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,540.54 : 1,379,421.42 = 304,065.28 : x
  2. Step 2: Convert to fraction form
    919,540.54/1,379,421.42 = 304,065.28/x
  3. Step 3: Cross multiply
    919,540.54x = 1,379,421.42 × 304,065.28
  4. Step 4: Simplify right side
    919,540.54x = 419,434,160,310.30
  5. Step 5: Solve for x
    x = 419,434,160,310.30/919,540.54
  6. Step 6: Final answer
    x = 456,134.50

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Double scale
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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.