Home / 768,930.42-1,153,391.45-313,519.88

Finding the Fourth Proportional to 768,930.42, 1,153,391.45 and 313,519.88

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Solution

The fourth proportional to 768,930.42, 1,153,391.45 and 313,519.88 is: 470,278.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,930.42 : 1,153,391.45 = 313,519.88 : x
  2. Step 2: Convert to fraction form
    768,930.42/1,153,391.45 = 313,519.88/x
  3. Step 3: Cross multiply
    768,930.42x = 1,153,391.45 × 313,519.88
  4. Step 4: Simplify right side
    768,930.42x = 361,611,148,997.03
  5. Step 5: Solve for x
    x = 361,611,148,997.03/768,930.42
  6. Step 6: Final answer
    x = 470,278.12

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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.