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Finding the Fourth Proportional to 519,121.80, 724,999.05 and 519,121.80

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Solution

The fourth proportional to 519,121.80, 724,999.05 and 519,121.80 is: 724,999.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,121.80 : 724,999.05 = 519,121.80 : x
  2. Step 2: Convert to fraction form
    519,121.80/724,999.05 = 519,121.80/x
  3. Step 3: Cross multiply
    519,121.80x = 724,999.05 × 519,121.80
  4. Step 4: Simplify right side
    519,121.80x = 376,362,811,834.29
  5. Step 5: Solve for x
    x = 376,362,811,834.29/519,121.80
  6. Step 6: Final answer
    x = 724,999.05

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.