Home / 1,278,478.67-1,764,669.47-755,673.57

Finding the Fourth Proportional to 1,278,478.67, 1,764,669.47 and 755,673.57

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Solution

The fourth proportional to 1,278,478.67, 1,764,669.47 and 755,673.57 is: 1,043,047.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,478.67 : 1,764,669.47 = 755,673.57 : x
  2. Step 2: Convert to fraction form
    1,278,478.67/1,764,669.47 = 755,673.57/x
  3. Step 3: Cross multiply
    1,278,478.67x = 1,764,669.47 × 755,673.57
  4. Step 4: Simplify right side
    1,278,478.67x = 1,333,514,074,486.54
  5. Step 5: Solve for x
    x = 1,333,514,074,486.54/1,278,478.67
  6. Step 6: Final answer
    x = 1,043,047.58

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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.