Home / 678,139.80-1,017,468.90-667,512.60

Finding the Fourth Proportional to 678,139.80, 1,017,468.90 and 667,512.60

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Solution

The fourth proportional to 678,139.80, 1,017,468.90 and 667,512.60 is: 1,001,524.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,139.80 : 1,017,468.90 = 667,512.60 : x
  2. Step 2: Convert to fraction form
    678,139.80/1,017,468.90 = 667,512.60/x
  3. Step 3: Cross multiply
    678,139.80x = 1,017,468.90 × 667,512.60
  4. Step 4: Simplify right side
    678,139.80x = 679,173,310,858.14
  5. Step 5: Solve for x
    x = 679,173,310,858.14/678,139.80
  6. Step 6: Final answer
    x = 1,001,524.04

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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.