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Finding the Fourth Proportional to 617,123.52, 925,352.44 and 279,980.21

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Solution

The fourth proportional to 617,123.52, 925,352.44 and 279,980.21 is: 419,819.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,123.52 : 925,352.44 = 279,980.21 : x
  2. Step 2: Convert to fraction form
    617,123.52/925,352.44 = 279,980.21/x
  3. Step 3: Cross multiply
    617,123.52x = 925,352.44 × 279,980.21
  4. Step 4: Simplify right side
    617,123.52x = 259,080,364,448.55
  5. Step 5: Solve for x
    x = 259,080,364,448.55/617,123.52
  6. Step 6: Final answer
    x = 419,819.30

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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.