Home / 1,247,738.63-1,721,884.50-674,778.80

Finding the Fourth Proportional to 1,247,738.63, 1,721,884.50 and 674,778.80

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Solution

The fourth proportional to 1,247,738.63, 1,721,884.50 and 674,778.80 is: 931,197.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,738.63 : 1,721,884.50 = 674,778.80 : x
  2. Step 2: Convert to fraction form
    1,247,738.63/1,721,884.50 = 674,778.80/x
  3. Step 3: Cross multiply
    1,247,738.63x = 1,721,884.50 × 674,778.80
  4. Step 4: Simplify right side
    1,247,738.63x = 1,161,891,151,965.82
  5. Step 5: Solve for x
    x = 1,161,891,151,965.82/1,247,738.63
  6. Step 6: Final answer
    x = 931,197.55

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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.