Home / 1,171,515.12-1,755,266.40-639,409.56

Finding the Fourth Proportional to 1,171,515.12, 1,755,266.40 and 639,409.56

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Solution

The fourth proportional to 1,171,515.12, 1,755,266.40 and 639,409.56 is: 958,019.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,515.12 : 1,755,266.40 = 639,409.56 : x
  2. Step 2: Convert to fraction form
    1,171,515.12/1,755,266.40 = 639,409.56/x
  3. Step 3: Cross multiply
    1,171,515.12x = 1,755,266.40 × 639,409.56
  4. Step 4: Simplify right side
    1,171,515.12x = 1,122,334,116,506.78
  5. Step 5: Solve for x
    x = 1,122,334,116,506.78/1,171,515.12
  6. Step 6: Final answer
    x = 958,019.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.