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Finding the Fourth Proportional to 521,183.36, 780,756.96 and 359,048.81

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Solution

The fourth proportional to 521,183.36, 780,756.96 and 359,048.81 is: 537,871.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,183.36 : 780,756.96 = 359,048.81 : x
  2. Step 2: Convert to fraction form
    521,183.36/780,756.96 = 359,048.81/x
  3. Step 3: Cross multiply
    521,183.36x = 780,756.96 × 359,048.81
  4. Step 4: Simplify right side
    521,183.36x = 280,329,857,387.22
  5. Step 5: Solve for x
    x = 280,329,857,387.22/521,183.36
  6. Step 6: Final answer
    x = 537,871.85

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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.