Home / 816,901.76-1,225,353.18-255,980

Finding the Fourth Proportional to 816,901.76, 1,225,353.18 and 255,980

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Solution

The fourth proportional to 816,901.76, 1,225,353.18 and 255,980 is: 383,970.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,901.76 : 1,225,353.18 = 255,980 : x
  2. Step 2: Convert to fraction form
    816,901.76/1,225,353.18 = 255,980/x
  3. Step 3: Cross multiply
    816,901.76x = 1,225,353.18 × 255,980
  4. Step 4: Simplify right side
    816,901.76x = 313,665,907,016.40
  5. Step 5: Solve for x
    x = 313,665,907,016.40/816,901.76
  6. Step 6: Final answer
    x = 383,970.17

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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.