Home / 638,828.13-958,374.45-259,748.91

Finding the Fourth Proportional to 638,828.13, 958,374.45 and 259,748.91

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Solution

The fourth proportional to 638,828.13, 958,374.45 and 259,748.91 is: 389,677.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,828.13 : 958,374.45 = 259,748.91 : x
  2. Step 2: Convert to fraction form
    638,828.13/958,374.45 = 259,748.91/x
  3. Step 3: Cross multiply
    638,828.13x = 958,374.45 × 259,748.91
  4. Step 4: Simplify right side
    638,828.13x = 248,936,718,759.35
  5. Step 5: Solve for x
    x = 248,936,718,759.35/638,828.13
  6. Step 6: Final answer
    x = 389,677.14

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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.