Home / 1,229,553.40-1,696,780.38-685,689.80

Finding the Fourth Proportional to 1,229,553.40, 1,696,780.38 and 685,689.80

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Solution

The fourth proportional to 1,229,553.40, 1,696,780.38 and 685,689.80 is: 946,250.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,553.40 : 1,696,780.38 = 685,689.80 : x
  2. Step 2: Convert to fraction form
    1,229,553.40/1,696,780.38 = 685,689.80/x
  3. Step 3: Cross multiply
    1,229,553.40x = 1,696,780.38 × 685,689.80
  4. Step 4: Simplify right side
    1,229,553.40x = 1,163,464,999,406.12
  5. Step 5: Solve for x
    x = 1,163,464,999,406.12/1,229,553.40
  6. Step 6: Final answer
    x = 946,250.08

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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.