Home / 878,486.04-1,212,324.18-515,917.56

Finding the Fourth Proportional to 878,486.04, 1,212,324.18 and 515,917.56

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Solution

The fourth proportional to 878,486.04, 1,212,324.18 and 515,917.56 is: 711,974.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,486.04 : 1,212,324.18 = 515,917.56 : x
  2. Step 2: Convert to fraction form
    878,486.04/1,212,324.18 = 515,917.56/x
  3. Step 3: Cross multiply
    878,486.04x = 1,212,324.18 × 515,917.56
  4. Step 4: Simplify right side
    878,486.04x = 625,459,332,874.60
  5. Step 5: Solve for x
    x = 625,459,332,874.60/878,486.04
  6. Step 6: Final answer
    x = 711,974.13

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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.