Home / 1,243,128.36-1,715,031.32-699,139.38

Finding the Fourth Proportional to 1,243,128.36, 1,715,031.32 and 699,139.38

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Solution

The fourth proportional to 1,243,128.36, 1,715,031.32 and 699,139.38 is: 964,539.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,128.36 : 1,715,031.32 = 699,139.38 : x
  2. Step 2: Convert to fraction form
    1,243,128.36/1,715,031.32 = 699,139.38/x
  3. Step 3: Cross multiply
    1,243,128.36x = 1,715,031.32 × 699,139.38
  4. Step 4: Simplify right side
    1,243,128.36x = 1,199,045,930,249.68
  5. Step 5: Solve for x
    x = 1,199,045,930,249.68/1,243,128.36
  6. Step 6: Final answer
    x = 964,539.12

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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.