Home / 811,930.37-1,120,455.65-449,354.93

Finding the Fourth Proportional to 811,930.37, 1,120,455.65 and 449,354.93

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Solution

The fourth proportional to 811,930.37, 1,120,455.65 and 449,354.93 is: 620,105.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,930.37 : 1,120,455.65 = 449,354.93 : x
  2. Step 2: Convert to fraction form
    811,930.37/1,120,455.65 = 449,354.93/x
  3. Step 3: Cross multiply
    811,930.37x = 1,120,455.65 × 449,354.93
  4. Step 4: Simplify right side
    811,930.37x = 503,482,265,694.96
  5. Step 5: Solve for x
    x = 503,482,265,694.96/811,930.37
  6. Step 6: Final answer
    x = 620,105.23

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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.