Home / 678,496.80-1,017,745.20-479,431.20

Finding the Fourth Proportional to 678,496.80, 1,017,745.20 and 479,431.20

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Solution

The fourth proportional to 678,496.80, 1,017,745.20 and 479,431.20 is: 719,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,496.80 : 1,017,745.20 = 479,431.20 : x
  2. Step 2: Convert to fraction form
    678,496.80/1,017,745.20 = 479,431.20/x
  3. Step 3: Cross multiply
    678,496.80x = 1,017,745.20 × 479,431.20
  4. Step 4: Simplify right side
    678,496.80x = 487,938,802,530.24
  5. Step 5: Solve for x
    x = 487,938,802,530.24/678,496.80
  6. Step 6: Final answer
    x = 719,146.80

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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.