Home / 1,130,243.40-1,695,170.70-419,905.80

Finding the Fourth Proportional to 1,130,243.40, 1,695,170.70 and 419,905.80

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Solution

The fourth proportional to 1,130,243.40, 1,695,170.70 and 419,905.80 is: 629,786.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130,243.40 : 1,695,170.70 = 419,905.80 : x
  2. Step 2: Convert to fraction form
    1,130,243.40/1,695,170.70 = 419,905.80/x
  3. Step 3: Cross multiply
    1,130,243.40x = 1,695,170.70 × 419,905.80
  4. Step 4: Simplify right side
    1,130,243.40x = 711,812,008,920.06
  5. Step 5: Solve for x
    x = 711,812,008,920.06/1,130,243.40
  6. Step 6: Final answer
    x = 629,786.48

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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.