Home / 1,355,081.60-1,869,999.82-743,221.88

Finding the Fourth Proportional to 1,355,081.60, 1,869,999.82 and 743,221.88

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Solution

The fourth proportional to 1,355,081.60, 1,869,999.82 and 743,221.88 is: 1,025,639.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,081.60 : 1,869,999.82 = 743,221.88 : x
  2. Step 2: Convert to fraction form
    1,355,081.60/1,869,999.82 = 743,221.88/x
  3. Step 3: Cross multiply
    1,355,081.60x = 1,869,999.82 × 743,221.88
  4. Step 4: Simplify right side
    1,355,081.60x = 1,389,824,777,624.51
  5. Step 5: Solve for x
    x = 1,389,824,777,624.51/1,355,081.60
  6. Step 6: Final answer
    x = 1,025,639.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.