Home / 445,134.20-613,946.13-383,150.21

Finding the Fourth Proportional to 445,134.20, 613,946.13 and 383,150.21

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Solution

The fourth proportional to 445,134.20, 613,946.13 and 383,150.21 is: 528,455.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,134.20 : 613,946.13 = 383,150.21 : x
  2. Step 2: Convert to fraction form
    445,134.20/613,946.13 = 383,150.21/x
  3. Step 3: Cross multiply
    445,134.20x = 613,946.13 × 383,150.21
  4. Step 4: Simplify right side
    445,134.20x = 235,233,588,638.19
  5. Step 5: Solve for x
    x = 235,233,588,638.19/445,134.20
  6. Step 6: Final answer
    x = 528,455.44

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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.