Home / 1,261,081.90-1,740,334.98-688,153.51

Finding the Fourth Proportional to 1,261,081.90, 1,740,334.98 and 688,153.51

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Solution

The fourth proportional to 1,261,081.90, 1,740,334.98 and 688,153.51 is: 949,674.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,081.90 : 1,740,334.98 = 688,153.51 : x
  2. Step 2: Convert to fraction form
    1,261,081.90/1,740,334.98 = 688,153.51/x
  3. Step 3: Cross multiply
    1,261,081.90x = 1,740,334.98 × 688,153.51
  4. Step 4: Simplify right side
    1,261,081.90x = 1,197,617,625,062.78
  5. Step 5: Solve for x
    x = 1,197,617,625,062.78/1,261,081.90
  6. Step 6: Final answer
    x = 949,674.74

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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.