Home / 768,186.40-1,151,628.94-318,626.68

Finding the Fourth Proportional to 768,186.40, 1,151,628.94 and 318,626.68

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Solution

The fourth proportional to 768,186.40, 1,151,628.94 and 318,626.68 is: 477,670.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,186.40 : 1,151,628.94 = 318,626.68 : x
  2. Step 2: Convert to fraction form
    768,186.40/1,151,628.94 = 318,626.68/x
  3. Step 3: Cross multiply
    768,186.40x = 1,151,628.94 × 318,626.68
  4. Step 4: Simplify right side
    768,186.40x = 366,939,705,744.12
  5. Step 5: Solve for x
    x = 366,939,705,744.12/768,186.40
  6. Step 6: Final answer
    x = 477,670.14

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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.