Home / 1,261,077.90-1,740,329.46-688,149.51

Finding the Fourth Proportional to 1,261,077.90, 1,740,329.46 and 688,149.51

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Solution

The fourth proportional to 1,261,077.90, 1,740,329.46 and 688,149.51 is: 949,669.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,077.90 : 1,740,329.46 = 688,149.51 : x
  2. Step 2: Convert to fraction form
    1,261,077.90/1,740,329.46 = 688,149.51/x
  3. Step 3: Cross multiply
    1,261,077.90x = 1,740,329.46 × 688,149.51
  4. Step 4: Simplify right side
    1,261,077.90x = 1,197,606,865,137.56
  5. Step 5: Solve for x
    x = 1,197,606,865,137.56/1,261,077.90
  6. Step 6: Final answer
    x = 949,669.22

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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.