Home / 777,631.05-1,072,764.14-455,141.43

Finding the Fourth Proportional to 777,631.05, 1,072,764.14 and 455,141.43

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Solution

The fourth proportional to 777,631.05, 1,072,764.14 and 455,141.43 is: 627,880.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,631.05 : 1,072,764.14 = 455,141.43 : x
  2. Step 2: Convert to fraction form
    777,631.05/1,072,764.14 = 455,141.43/x
  3. Step 3: Cross multiply
    777,631.05x = 1,072,764.14 × 455,141.43
  4. Step 4: Simplify right side
    777,631.05x = 488,259,402,456.61
  5. Step 5: Solve for x
    x = 488,259,402,456.61/777,631.05
  6. Step 6: Final answer
    x = 627,880.54

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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.