Home / 811,101.86-1,217,384.05-432,338.06

Finding the Fourth Proportional to 811,101.86, 1,217,384.05 and 432,338.06

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Solution

The fourth proportional to 811,101.86, 1,217,384.05 and 432,338.06 is: 648,896.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,101.86 : 1,217,384.05 = 432,338.06 : x
  2. Step 2: Convert to fraction form
    811,101.86/1,217,384.05 = 432,338.06/x
  3. Step 3: Cross multiply
    811,101.86x = 1,217,384.05 × 432,338.06
  4. Step 4: Simplify right side
    811,101.86x = 526,321,458,451.94
  5. Step 5: Solve for x
    x = 526,321,458,451.94/811,101.86
  6. Step 6: Final answer
    x = 648,896.87

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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.