Home / 1,189,259.84-1,641,183-645,395.60

Finding the Fourth Proportional to 1,189,259.84, 1,641,183 and 645,395.60

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Solution

The fourth proportional to 1,189,259.84, 1,641,183 and 645,395.60 is: 890,648.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,259.84 : 1,641,183 = 645,395.60 : x
  2. Step 2: Convert to fraction form
    1,189,259.84/1,641,183 = 645,395.60/x
  3. Step 3: Cross multiply
    1,189,259.84x = 1,641,183 × 645,395.60
  4. Step 4: Simplify right side
    1,189,259.84x = 1,059,212,286,994.80
  5. Step 5: Solve for x
    x = 1,059,212,286,994.80/1,189,259.84
  6. Step 6: Final answer
    x = 890,648.33

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Half scale
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Double scale
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Similar ratio
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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.