Home / 420,694.48-580,559.10-229,703.80

Finding the Fourth Proportional to 420,694.48, 580,559.10 and 229,703.80

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Solution

The fourth proportional to 420,694.48, 580,559.10 and 229,703.80 is: 316,991.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,694.48 : 580,559.10 = 229,703.80 : x
  2. Step 2: Convert to fraction form
    420,694.48/580,559.10 = 229,703.80/x
  3. Step 3: Cross multiply
    420,694.48x = 580,559.10 × 229,703.80
  4. Step 4: Simplify right side
    420,694.48x = 133,356,631,394.58
  5. Step 5: Solve for x
    x = 133,356,631,394.58/420,694.48
  6. Step 6: Final answer
    x = 316,991.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.