Home / 485,815.21-670,425.89-270,969.13

Finding the Fourth Proportional to 485,815.21, 670,425.89 and 270,969.13

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Solution

The fourth proportional to 485,815.21, 670,425.89 and 270,969.13 is: 373,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,815.21 : 670,425.89 = 270,969.13 : x
  2. Step 2: Convert to fraction form
    485,815.21/670,425.89 = 270,969.13/x
  3. Step 3: Cross multiply
    485,815.21x = 670,425.89 × 270,969.13
  4. Step 4: Simplify right side
    485,815.21x = 181,664,715,435.80
  5. Step 5: Solve for x
    x = 181,664,715,435.80/485,815.21
  6. Step 6: Final answer
    x = 373,937.90

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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.