Home / 638,964.38-958,282.54-189,578.93

Finding the Fourth Proportional to 638,964.38, 958,282.54 and 189,578.93

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Solution

The fourth proportional to 638,964.38, 958,282.54 and 189,578.93 is: 284,319.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,964.38 : 958,282.54 = 189,578.93 : x
  2. Step 2: Convert to fraction form
    638,964.38/958,282.54 = 189,578.93/x
  3. Step 3: Cross multiply
    638,964.38x = 958,282.54 × 189,578.93
  4. Step 4: Simplify right side
    638,964.38x = 181,670,173,305.52
  5. Step 5: Solve for x
    x = 181,670,173,305.52/638,964.38
  6. Step 6: Final answer
    x = 284,319.72

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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.