Home / 812,486.49-1,218,007.00-385,759.05

Finding the Fourth Proportional to 812,486.49, 1,218,007.00 and 385,759.05

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Solution

The fourth proportional to 812,486.49, 1,218,007.00 and 385,759.05 is: 578,295.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,486.49 : 1,218,007.00 = 385,759.05 : x
  2. Step 2: Convert to fraction form
    812,486.49/1,218,007.00 = 385,759.05/x
  3. Step 3: Cross multiply
    812,486.49x = 1,218,007.00 × 385,759.05
  4. Step 4: Simplify right side
    812,486.49x = 469,857,222,248.95
  5. Step 5: Solve for x
    x = 469,857,222,248.95/812,486.49
  6. Step 6: Final answer
    x = 578,295.43

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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.