Home / 811,601.64-1,120,368.99-485,029.86

Finding the Fourth Proportional to 811,601.64, 1,120,368.99 and 485,029.86

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Solution

The fourth proportional to 811,601.64, 1,120,368.99 and 485,029.86 is: 669,555.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,601.64 : 1,120,368.99 = 485,029.86 : x
  2. Step 2: Convert to fraction form
    811,601.64/1,120,368.99 = 485,029.86/x
  3. Step 3: Cross multiply
    811,601.64x = 1,120,368.99 × 485,029.86
  4. Step 4: Simplify right side
    811,601.64x = 543,412,414,368.04
  5. Step 5: Solve for x
    x = 543,412,414,368.04/811,601.64
  6. Step 6: Final answer
    x = 669,555.59

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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.