Home / 777,404.55-1,072,854.80-455,218.44

Finding the Fourth Proportional to 777,404.55, 1,072,854.80 and 455,218.44

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Solution

The fourth proportional to 777,404.55, 1,072,854.80 and 455,218.44 is: 628,222.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,404.55 : 1,072,854.80 = 455,218.44 : x
  2. Step 2: Convert to fraction form
    777,404.55/1,072,854.80 = 455,218.44/x
  3. Step 3: Cross multiply
    777,404.55x = 1,072,854.80 × 455,218.44
  4. Step 4: Simplify right side
    777,404.55x = 488,383,287,833.49
  5. Step 5: Solve for x
    x = 488,383,287,833.49/777,404.55
  6. Step 6: Final answer
    x = 628,222.83

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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.