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Finding the Fourth Proportional to 638,022.06, 958,790.88 and 338,726.88

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Solution

The fourth proportional to 638,022.06, 958,790.88 and 338,726.88 is: 509,023.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,022.06 : 958,790.88 = 338,726.88 : x
  2. Step 2: Convert to fraction form
    638,022.06/958,790.88 = 338,726.88/x
  3. Step 3: Cross multiply
    638,022.06x = 958,790.88 × 338,726.88
  4. Step 4: Simplify right side
    638,022.06x = 324,768,243,354.85
  5. Step 5: Solve for x
    x = 324,768,243,354.85/638,022.06
  6. Step 6: Final answer
    x = 509,023.53

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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.