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Finding the Fourth Proportional to 479,311.80, 718,967.70 and 302,602.20

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Solution

The fourth proportional to 479,311.80, 718,967.70 and 302,602.20 is: 453,903.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,311.80 : 718,967.70 = 302,602.20 : x
  2. Step 2: Convert to fraction form
    479,311.80/718,967.70 = 302,602.20/x
  3. Step 3: Cross multiply
    479,311.80x = 718,967.70 × 302,602.20
  4. Step 4: Simplify right side
    479,311.80x = 217,561,207,748.94
  5. Step 5: Solve for x
    x = 217,561,207,748.94/479,311.80
  6. Step 6: Final answer
    x = 453,903.30

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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.