Home / 1,317,955.20-1,976,932.80-786,076.80

Finding the Fourth Proportional to 1,317,955.20, 1,976,932.80 and 786,076.80

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Solution

The fourth proportional to 1,317,955.20, 1,976,932.80 and 786,076.80 is: 1,179,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,955.20 : 1,976,932.80 = 786,076.80 : x
  2. Step 2: Convert to fraction form
    1,317,955.20/1,976,932.80 = 786,076.80/x
  3. Step 3: Cross multiply
    1,317,955.20x = 1,976,932.80 × 786,076.80
  4. Step 4: Simplify right side
    1,317,955.20x = 1,554,021,009,239.04
  5. Step 5: Solve for x
    x = 1,554,021,009,239.04/1,317,955.20
  6. Step 6: Final answer
    x = 1,179,115.20

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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.