Home / 1,185,800.40-1,636,405.07-641,936.18

Finding the Fourth Proportional to 1,185,800.40, 1,636,405.07 and 641,936.18

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Solution

The fourth proportional to 1,185,800.40, 1,636,405.07 and 641,936.18 is: 885,872.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,800.40 : 1,636,405.07 = 641,936.18 : x
  2. Step 2: Convert to fraction form
    1,185,800.40/1,636,405.07 = 641,936.18/x
  3. Step 3: Cross multiply
    1,185,800.40x = 1,636,405.07 × 641,936.18
  4. Step 4: Simplify right side
    1,185,800.40x = 1,050,467,619,568.43
  5. Step 5: Solve for x
    x = 1,050,467,619,568.43/1,185,800.40
  6. Step 6: Final answer
    x = 885,872.21

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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.