Home / 811,845.81-1,120,349.40-449,294.67

Finding the Fourth Proportional to 811,845.81, 1,120,349.40 and 449,294.67

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Solution

The fourth proportional to 811,845.81, 1,120,349.40 and 449,294.67 is: 620,027.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,845.81 : 1,120,349.40 = 449,294.67 : x
  2. Step 2: Convert to fraction form
    811,845.81/1,120,349.40 = 449,294.67/x
  3. Step 3: Cross multiply
    811,845.81x = 1,120,349.40 × 449,294.67
  4. Step 4: Simplify right side
    811,845.81x = 503,367,019,843.86
  5. Step 5: Solve for x
    x = 503,367,019,843.86/811,845.81
  6. Step 6: Final answer
    x = 620,027.86

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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.