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Finding the Fourth Proportional to 520,912.13, 780,835.37 and 352,450.25

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Solution

The fourth proportional to 520,912.13, 780,835.37 and 352,450.25 is: 528,314.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,912.13 : 780,835.37 = 352,450.25 : x
  2. Step 2: Convert to fraction form
    520,912.13/780,835.37 = 352,450.25/x
  3. Step 3: Cross multiply
    520,912.13x = 780,835.37 × 352,450.25
  4. Step 4: Simplify right side
    520,912.13x = 275,205,617,461.17
  5. Step 5: Solve for x
    x = 275,205,617,461.17/520,912.13
  6. Step 6: Final answer
    x = 528,314.86

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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.