Home / 1,186,874.24-1,637,886.83-643,013.78

Finding the Fourth Proportional to 1,186,874.24, 1,637,886.83 and 643,013.78

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Solution

The fourth proportional to 1,186,874.24, 1,637,886.83 and 643,013.78 is: 887,359.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,874.24 : 1,637,886.83 = 643,013.78 : x
  2. Step 2: Convert to fraction form
    1,186,874.24/1,637,886.83 = 643,013.78/x
  3. Step 3: Cross multiply
    1,186,874.24x = 1,637,886.83 × 643,013.78
  4. Step 4: Simplify right side
    1,186,874.24x = 1,053,183,790,366.01
  5. Step 5: Solve for x
    x = 1,053,183,790,366.01/1,186,874.24
  6. Step 6: Final answer
    x = 887,359.22

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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.