Home / 827,105.80-1,240,002.60-453,128.80

Finding the Fourth Proportional to 827,105.80, 1,240,002.60 and 453,128.80

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Solution

The fourth proportional to 827,105.80, 1,240,002.60 and 453,128.80 is: 679,333.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,105.80 : 1,240,002.60 = 453,128.80 : x
  2. Step 2: Convert to fraction form
    827,105.80/1,240,002.60 = 453,128.80/x
  3. Step 3: Cross multiply
    827,105.80x = 1,240,002.60 × 453,128.80
  4. Step 4: Simplify right side
    827,105.80x = 561,880,890,134.88
  5. Step 5: Solve for x
    x = 561,880,890,134.88/827,105.80
  6. Step 6: Final answer
    x = 679,333.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.