Home / 1,261,305-1,740,637.80-688,381.92

Finding the Fourth Proportional to 1,261,305, 1,740,637.80 and 688,381.92

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Solution

The fourth proportional to 1,261,305, 1,740,637.80 and 688,381.92 is: 949,987.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,305 : 1,740,637.80 = 688,381.92 : x
  2. Step 2: Convert to fraction form
    1,261,305/1,740,637.80 = 688,381.92/x
  3. Step 3: Cross multiply
    1,261,305x = 1,740,637.80 × 688,381.92
  4. Step 4: Simplify right side
    1,261,305x = 1,198,223,590,788.58
  5. Step 5: Solve for x
    x = 1,198,223,590,788.58/1,261,305
  6. Step 6: Final answer
    x = 949,987.19

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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.