Home / 1,186,853.51-1,637,855.91-643,003.11

Finding the Fourth Proportional to 1,186,853.51, 1,637,855.91 and 643,003.11

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Solution

The fourth proportional to 1,186,853.51, 1,637,855.91 and 643,003.11 is: 887,343.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,853.51 : 1,637,855.91 = 643,003.11 : x
  2. Step 2: Convert to fraction form
    1,186,853.51/1,637,855.91 = 643,003.11/x
  3. Step 3: Cross multiply
    1,186,853.51x = 1,637,855.91 × 643,003.11
  4. Step 4: Simplify right side
    1,186,853.51x = 1,053,146,443,861.88
  5. Step 5: Solve for x
    x = 1,053,146,443,861.88/1,186,853.51
  6. Step 6: Final answer
    x = 887,343.24

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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.