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Finding the Fourth Proportional to 520,908.38, 780,829.75 and 352,446.50

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Solution

The fourth proportional to 520,908.38, 780,829.75 and 352,446.50 is: 528,309.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,908.38 : 780,829.75 = 352,446.50 : x
  2. Step 2: Convert to fraction form
    520,908.38/780,829.75 = 352,446.50/x
  3. Step 3: Cross multiply
    520,908.38x = 780,829.75 × 352,446.50
  4. Step 4: Simplify right side
    520,908.38x = 275,200,706,816.99
  5. Step 5: Solve for x
    x = 275,200,706,816.99/520,908.38
  6. Step 6: Final answer
    x = 528,309.23

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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.