Home / 693,353.40-1,040,030.10-320,105.40

Finding the Fourth Proportional to 693,353.40, 1,040,030.10 and 320,105.40

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Solution

The fourth proportional to 693,353.40, 1,040,030.10 and 320,105.40 is: 480,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,353.40 : 1,040,030.10 = 320,105.40 : x
  2. Step 2: Convert to fraction form
    693,353.40/1,040,030.10 = 320,105.40/x
  3. Step 3: Cross multiply
    693,353.40x = 1,040,030.10 × 320,105.40
  4. Step 4: Simplify right side
    693,353.40x = 332,919,251,172.54
  5. Step 5: Solve for x
    x = 332,919,251,172.54/693,353.40
  6. Step 6: Final answer
    x = 480,158.10

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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.