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Finding the Fourth Proportional to 520,125.94, 780,133.02 and 352,720.81

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Solution

The fourth proportional to 520,125.94, 780,133.02 and 352,720.81 is: 529,043.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,125.94 : 780,133.02 = 352,720.81 : x
  2. Step 2: Convert to fraction form
    520,125.94/780,133.02 = 352,720.81/x
  3. Step 3: Cross multiply
    520,125.94x = 780,133.02 × 352,720.81
  4. Step 4: Simplify right side
    520,125.94x = 275,169,150,722.15
  5. Step 5: Solve for x
    x = 275,169,150,722.15/520,125.94
  6. Step 6: Final answer
    x = 529,043.31

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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.