Home / 515,297.44-711,110.56-288,943.04

Finding the Fourth Proportional to 515,297.44, 711,110.56 and 288,943.04

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Solution

The fourth proportional to 515,297.44, 711,110.56 and 288,943.04 is: 398,741.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,297.44 : 711,110.56 = 288,943.04 : x
  2. Step 2: Convert to fraction form
    515,297.44/711,110.56 = 288,943.04/x
  3. Step 3: Cross multiply
    515,297.44x = 711,110.56 × 288,943.04
  4. Step 4: Simplify right side
    515,297.44x = 205,470,446,982.50
  5. Step 5: Solve for x
    x = 205,470,446,982.50/515,297.44
  6. Step 6: Final answer
    x = 398,741.45

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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.