Home / 1,171,509.06-1,755,257.40-639,403.50

Finding the Fourth Proportional to 1,171,509.06, 1,755,257.40 and 639,403.50

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Solution

The fourth proportional to 1,171,509.06, 1,755,257.40 and 639,403.50 is: 958,010.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,509.06 : 1,755,257.40 = 639,403.50 : x
  2. Step 2: Convert to fraction form
    1,171,509.06/1,755,257.40 = 639,403.50/x
  3. Step 3: Cross multiply
    1,171,509.06x = 1,755,257.40 × 639,403.50
  4. Step 4: Simplify right side
    1,171,509.06x = 1,122,317,724,960.90
  5. Step 5: Solve for x
    x = 1,122,317,724,960.90/1,171,509.06
  6. Step 6: Final answer
    x = 958,010.28

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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.