Home / 638,665.04-958,138.20-189,421.04

Finding the Fourth Proportional to 638,665.04, 958,138.20 and 189,421.04

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Solution

The fourth proportional to 638,665.04, 958,138.20 and 189,421.04 is: 284,173.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,665.04 : 958,138.20 = 189,421.04 : x
  2. Step 2: Convert to fraction form
    638,665.04/958,138.20 = 189,421.04/x
  3. Step 3: Cross multiply
    638,665.04x = 958,138.20 × 189,421.04
  4. Step 4: Simplify right side
    638,665.04x = 181,491,534,307.73
  5. Step 5: Solve for x
    x = 181,491,534,307.73/638,665.04
  6. Step 6: Final answer
    x = 284,173.27

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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.