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Finding the Fourth Proportional to 639,286.80, 958,492.80 and 302,488.80

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Solution

The fourth proportional to 639,286.80, 958,492.80 and 302,488.80 is: 453,526.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,286.80 : 958,492.80 = 302,488.80 : x
  2. Step 2: Convert to fraction form
    639,286.80/958,492.80 = 302,488.80/x
  3. Step 3: Cross multiply
    639,286.80x = 958,492.80 × 302,488.80
  4. Step 4: Simplify right side
    639,286.80x = 289,933,336,880.64
  5. Step 5: Solve for x
    x = 289,933,336,880.64/639,286.80
  6. Step 6: Final answer
    x = 453,526.24

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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.