Home / 445,126.11-613,935.09-383,142.12

Finding the Fourth Proportional to 445,126.11, 613,935.09 and 383,142.12

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Solution

The fourth proportional to 445,126.11, 613,935.09 and 383,142.12 is: 528,444.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,126.11 : 613,935.09 = 383,142.12 : x
  2. Step 2: Convert to fraction form
    445,126.11/613,935.09 = 383,142.12/x
  3. Step 3: Cross multiply
    445,126.11x = 613,935.09 × 383,142.12
  4. Step 4: Simplify right side
    445,126.11x = 235,224,391,924.99
  5. Step 5: Solve for x
    x = 235,224,391,924.99/445,126.11
  6. Step 6: Final answer
    x = 528,444.38

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Half scale
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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.