Home / 777,401.54-1,072,850.66-455,215.43

Finding the Fourth Proportional to 777,401.54, 1,072,850.66 and 455,215.43

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Solution

The fourth proportional to 777,401.54, 1,072,850.66 and 455,215.43 is: 628,218.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,401.54 : 1,072,850.66 = 455,215.43 : x
  2. Step 2: Convert to fraction form
    777,401.54/1,072,850.66 = 455,215.43/x
  3. Step 3: Cross multiply
    777,401.54x = 1,072,850.66 × 455,215.43
  4. Step 4: Simplify right side
    777,401.54x = 488,378,166,877.35
  5. Step 5: Solve for x
    x = 488,378,166,877.35/777,401.54
  6. Step 6: Final answer
    x = 628,218.68

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1.5x scale

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.