Home / 1,407,999.20-2,111,998.80-521,880.80

Finding the Fourth Proportional to 1,407,999.20, 2,111,998.80 and 521,880.80

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Solution

The fourth proportional to 1,407,999.20, 2,111,998.80 and 521,880.80 is: 782,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407,999.20 : 2,111,998.80 = 521,880.80 : x
  2. Step 2: Convert to fraction form
    1,407,999.20/2,111,998.80 = 521,880.80/x
  3. Step 3: Cross multiply
    1,407,999.20x = 2,111,998.80 × 521,880.80
  4. Step 4: Simplify right side
    1,407,999.20x = 1,102,211,623,343.04
  5. Step 5: Solve for x
    x = 1,102,211,623,343.04/1,407,999.20
  6. Step 6: Final answer
    x = 782,821.20

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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.