Home / 1,218,128.22-1,681,020.14-674,301.51

Finding the Fourth Proportional to 1,218,128.22, 1,681,020.14 and 674,301.51

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Solution

The fourth proportional to 1,218,128.22, 1,681,020.14 and 674,301.51 is: 930,537.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,128.22 : 1,681,020.14 = 674,301.51 : x
  2. Step 2: Convert to fraction form
    1,218,128.22/1,681,020.14 = 674,301.51/x
  3. Step 3: Cross multiply
    1,218,128.22x = 1,681,020.14 × 674,301.51
  4. Step 4: Simplify right side
    1,218,128.22x = 1,133,514,415,370.90
  5. Step 5: Solve for x
    x = 1,133,514,415,370.90/1,218,128.22
  6. Step 6: Final answer
    x = 930,537.85

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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.