Home / 811,852.56-1,120,358.72-449,301.42

Finding the Fourth Proportional to 811,852.56, 1,120,358.72 and 449,301.42

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Solution

The fourth proportional to 811,852.56, 1,120,358.72 and 449,301.42 is: 620,037.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,852.56 : 1,120,358.72 = 449,301.42 : x
  2. Step 2: Convert to fraction form
    811,852.56/1,120,358.72 = 449,301.42/x
  3. Step 3: Cross multiply
    811,852.56x = 1,120,358.72 × 449,301.42
  4. Step 4: Simplify right side
    811,852.56x = 503,378,763,805.38
  5. Step 5: Solve for x
    x = 503,378,763,805.38/811,852.56
  6. Step 6: Final answer
    x = 620,037.17

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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.