Home / 808,382.80-1,212,085.78-322,139.74

Finding the Fourth Proportional to 808,382.80, 1,212,085.78 and 322,139.74

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Solution

The fourth proportional to 808,382.80, 1,212,085.78 and 322,139.74 is: 483,014.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,382.80 : 1,212,085.78 = 322,139.74 : x
  2. Step 2: Convert to fraction form
    808,382.80/1,212,085.78 = 322,139.74/x
  3. Step 3: Cross multiply
    808,382.80x = 1,212,085.78 × 322,139.74
  4. Step 4: Simplify right side
    808,382.80x = 390,460,992,369.14
  5. Step 5: Solve for x
    x = 390,460,992,369.14/808,382.80
  6. Step 6: Final answer
    x = 483,014.97

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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.