Home / 1,186,882.11-1,637,897.69-643,021.65

Finding the Fourth Proportional to 1,186,882.11, 1,637,897.69 and 643,021.65

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Solution

The fourth proportional to 1,186,882.11, 1,637,897.69 and 643,021.65 is: 887,370.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,882.11 : 1,637,897.69 = 643,021.65 : x
  2. Step 2: Convert to fraction form
    1,186,882.11/1,637,897.69 = 643,021.65/x
  3. Step 3: Cross multiply
    1,186,882.11x = 1,637,897.69 × 643,021.65
  4. Step 4: Simplify right side
    1,186,882.11x = 1,053,203,676,762.54
  5. Step 5: Solve for x
    x = 1,053,203,676,762.54/1,186,882.11
  6. Step 6: Final answer
    x = 887,370.08

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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.