Home / 1,261,245.36-1,740,555.28-688,322.40

Finding the Fourth Proportional to 1,261,245.36, 1,740,555.28 and 688,322.40

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Solution

The fourth proportional to 1,261,245.36, 1,740,555.28 and 688,322.40 is: 949,904.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,245.36 : 1,740,555.28 = 688,322.40 : x
  2. Step 2: Convert to fraction form
    1,261,245.36/1,740,555.28 = 688,322.40/x
  3. Step 3: Cross multiply
    1,261,245.36x = 1,740,555.28 × 688,322.40
  4. Step 4: Simplify right side
    1,261,245.36x = 1,198,063,187,662.27
  5. Step 5: Solve for x
    x = 1,198,063,187,662.27/1,261,245.36
  6. Step 6: Final answer
    x = 949,904.93

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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.