Home / 876,329.58-1,209,331.81-489,141.64

Finding the Fourth Proportional to 876,329.58, 1,209,331.81 and 489,141.64

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Solution

The fourth proportional to 876,329.58, 1,209,331.81 and 489,141.64 is: 675,013.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,329.58 : 1,209,331.81 = 489,141.64 : x
  2. Step 2: Convert to fraction form
    876,329.58/1,209,331.81 = 489,141.64/x
  3. Step 3: Cross multiply
    876,329.58x = 1,209,331.81 × 489,141.64
  4. Step 4: Simplify right side
    876,329.58x = 591,534,544,847.57
  5. Step 5: Solve for x
    x = 591,534,544,847.57/876,329.58
  6. Step 6: Final answer
    x = 675,013.78

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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.