Home / 638,962.12-958,279.16-189,576.68

Finding the Fourth Proportional to 638,962.12, 958,279.16 and 189,576.68

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Solution

The fourth proportional to 638,962.12, 958,279.16 and 189,576.68 is: 284,316.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,962.12 : 958,279.16 = 189,576.68 : x
  2. Step 2: Convert to fraction form
    638,962.12/958,279.16 = 189,576.68/x
  3. Step 3: Cross multiply
    638,962.12x = 958,279.16 × 189,576.68
  4. Step 4: Simplify right side
    638,962.12x = 181,667,378,977.33
  5. Step 5: Solve for x
    x = 181,667,378,977.33/638,962.12
  6. Step 6: Final answer
    x = 284,316.35

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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.