Home / 1,221,740.40-1,832,610.60-770,999.70

Finding the Fourth Proportional to 1,221,740.40, 1,832,610.60 and 770,999.70

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Solution

The fourth proportional to 1,221,740.40, 1,832,610.60 and 770,999.70 is: 1,156,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,740.40 : 1,832,610.60 = 770,999.70 : x
  2. Step 2: Convert to fraction form
    1,221,740.40/1,832,610.60 = 770,999.70/x
  3. Step 3: Cross multiply
    1,221,740.40x = 1,832,610.60 × 770,999.70
  4. Step 4: Simplify right side
    1,221,740.40x = 1,412,942,222,816.82
  5. Step 5: Solve for x
    x = 1,412,942,222,816.82/1,221,740.40
  6. Step 6: Final answer
    x = 1,156,499.55

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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.