Home / 693,419.40-1,040,129.10-293,992.20

Finding the Fourth Proportional to 693,419.40, 1,040,129.10 and 293,992.20

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Solution

The fourth proportional to 693,419.40, 1,040,129.10 and 293,992.20 is: 440,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,419.40 : 1,040,129.10 = 293,992.20 : x
  2. Step 2: Convert to fraction form
    693,419.40/1,040,129.10 = 293,992.20/x
  3. Step 3: Cross multiply
    693,419.40x = 1,040,129.10 × 293,992.20
  4. Step 4: Simplify right side
    693,419.40x = 305,789,842,393.02
  5. Step 5: Solve for x
    x = 305,789,842,393.02/693,419.40
  6. Step 6: Final answer
    x = 440,988.30

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Half scale
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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.