Home / 1,102,536.81-1,521,234.68-643,389.39

Finding the Fourth Proportional to 1,102,536.81, 1,521,234.68 and 643,389.39

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Solution

The fourth proportional to 1,102,536.81, 1,521,234.68 and 643,389.39 is: 887,722.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102,536.81 : 1,521,234.68 = 643,389.39 : x
  2. Step 2: Convert to fraction form
    1,102,536.81/1,521,234.68 = 643,389.39/x
  3. Step 3: Cross multiply
    1,102,536.81x = 1,521,234.68 × 643,389.39
  4. Step 4: Simplify right side
    1,102,536.81x = 978,746,249,595.10
  5. Step 5: Solve for x
    x = 978,746,249,595.10/1,102,536.81
  6. Step 6: Final answer
    x = 887,722.06

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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.