Home / 1,261,085.40-1,740,339.81-688,157.01

Finding the Fourth Proportional to 1,261,085.40, 1,740,339.81 and 688,157.01

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Solution

The fourth proportional to 1,261,085.40, 1,740,339.81 and 688,157.01 is: 949,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,085.40 : 1,740,339.81 = 688,157.01 : x
  2. Step 2: Convert to fraction form
    1,261,085.40/1,740,339.81 = 688,157.01/x
  3. Step 3: Cross multiply
    1,261,085.40x = 1,740,339.81 × 688,157.01
  4. Step 4: Simplify right side
    1,261,085.40x = 1,197,627,040,033.57
  5. Step 5: Solve for x
    x = 1,197,627,040,033.57/1,261,085.40
  6. Step 6: Final answer
    x = 949,679.57

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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.