Home / 1,185,298.45-1,635,716-641,434.11

Finding the Fourth Proportional to 1,185,298.45, 1,635,716 and 641,434.11

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Solution

The fourth proportional to 1,185,298.45, 1,635,716 and 641,434.11 is: 885,181.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,298.45 : 1,635,716 = 641,434.11 : x
  2. Step 2: Convert to fraction form
    1,185,298.45/1,635,716 = 641,434.11/x
  3. Step 3: Cross multiply
    1,185,298.45x = 1,635,716 × 641,434.11
  4. Step 4: Simplify right side
    1,185,298.45x = 1,049,204,036,672.76
  5. Step 5: Solve for x
    x = 1,049,204,036,672.76/1,185,298.45
  6. Step 6: Final answer
    x = 885,181.31

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Double scale
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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.