Home / 812,485.04-1,218,840.99-339,061.94

Finding the Fourth Proportional to 812,485.04, 1,218,840.99 and 339,061.94

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Solution

The fourth proportional to 812,485.04, 1,218,840.99 and 339,061.94 is: 508,640.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,485.04 : 1,218,840.99 = 339,061.94 : x
  2. Step 2: Convert to fraction form
    812,485.04/1,218,840.99 = 339,061.94/x
  3. Step 3: Cross multiply
    812,485.04x = 1,218,840.99 × 339,061.94
  4. Step 4: Simplify right side
    812,485.04x = 413,262,590,620.92
  5. Step 5: Solve for x
    x = 413,262,590,620.92/812,485.04
  6. Step 6: Final answer
    x = 508,640.25

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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.