Home / 1,224,131.76-1,689,344.34-680,290.47

Finding the Fourth Proportional to 1,224,131.76, 1,689,344.34 and 680,290.47

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Solution

The fourth proportional to 1,224,131.76, 1,689,344.34 and 680,290.47 is: 938,824.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,131.76 : 1,689,344.34 = 680,290.47 : x
  2. Step 2: Convert to fraction form
    1,224,131.76/1,689,344.34 = 680,290.47/x
  3. Step 3: Cross multiply
    1,224,131.76x = 1,689,344.34 × 680,290.47
  4. Step 4: Simplify right side
    1,224,131.76x = 1,149,244,855,050.44
  5. Step 5: Solve for x
    x = 1,149,244,855,050.44/1,224,131.76
  6. Step 6: Final answer
    x = 938,824.47

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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.