Home / 827,359.60-1,242,205.80-512,431.60

Finding the Fourth Proportional to 827,359.60, 1,242,205.80 and 512,431.60

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Solution

The fourth proportional to 827,359.60, 1,242,205.80 and 512,431.60 is: 769,369.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,359.60 : 1,242,205.80 = 512,431.60 : x
  2. Step 2: Convert to fraction form
    827,359.60/1,242,205.80 = 512,431.60/x
  3. Step 3: Cross multiply
    827,359.60x = 1,242,205.80 × 512,431.60
  4. Step 4: Simplify right side
    827,359.60x = 636,545,505,623.28
  5. Step 5: Solve for x
    x = 636,545,505,623.28/827,359.60
  6. Step 6: Final answer
    x = 769,369.82

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1.5x scale

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.