Home / 1,247,739.51-1,721,885.71-674,779.68

Finding the Fourth Proportional to 1,247,739.51, 1,721,885.71 and 674,779.68

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Solution

The fourth proportional to 1,247,739.51, 1,721,885.71 and 674,779.68 is: 931,198.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,739.51 : 1,721,885.71 = 674,779.68 : x
  2. Step 2: Convert to fraction form
    1,247,739.51/1,721,885.71 = 674,779.68/x
  3. Step 3: Cross multiply
    1,247,739.51x = 1,721,885.71 × 674,779.68
  4. Step 4: Simplify right side
    1,247,739.51x = 1,161,893,476,407.05
  5. Step 5: Solve for x
    x = 1,161,893,476,407.05/1,247,739.51
  6. Step 6: Final answer
    x = 931,198.76

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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.