Home / 808,476.30-1,212,718.06-209,394.90

Finding the Fourth Proportional to 808,476.30, 1,212,718.06 and 209,394.90

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Solution

The fourth proportional to 808,476.30, 1,212,718.06 and 209,394.90 is: 314,093.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,476.30 : 1,212,718.06 = 209,394.90 : x
  2. Step 2: Convert to fraction form
    808,476.30/1,212,718.06 = 209,394.90/x
  3. Step 3: Cross multiply
    808,476.30x = 1,212,718.06 × 209,394.90
  4. Step 4: Simplify right side
    808,476.30x = 253,936,976,901.89
  5. Step 5: Solve for x
    x = 253,936,976,901.89/808,476.30
  6. Step 6: Final answer
    x = 314,093.28

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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.