Home / 811,874.16-1,120,358.64-449,313.24

Finding the Fourth Proportional to 811,874.16, 1,120,358.64 and 449,313.24

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Solution

The fourth proportional to 811,874.16, 1,120,358.64 and 449,313.24 is: 620,036.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,874.16 : 1,120,358.64 = 449,313.24 : x
  2. Step 2: Convert to fraction form
    811,874.16/1,120,358.64 = 449,313.24/x
  3. Step 3: Cross multiply
    811,874.16x = 1,120,358.64 × 449,313.24
  4. Step 4: Simplify right side
    811,874.16x = 503,391,970,500.39
  5. Step 5: Solve for x
    x = 503,391,970,500.39/811,874.16
  6. Step 6: Final answer
    x = 620,036.94

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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.