Home / 678,563.80-1,017,845.70-663,011.80

Finding the Fourth Proportional to 678,563.80, 1,017,845.70 and 663,011.80

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Solution

The fourth proportional to 678,563.80, 1,017,845.70 and 663,011.80 is: 994,517.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,563.80 : 1,017,845.70 = 663,011.80 : x
  2. Step 2: Convert to fraction form
    678,563.80/1,017,845.70 = 663,011.80/x
  3. Step 3: Cross multiply
    678,563.80x = 1,017,845.70 × 663,011.80
  4. Step 4: Simplify right side
    678,563.80x = 674,843,709,679.26
  5. Step 5: Solve for x
    x = 674,843,709,679.26/678,563.80
  6. Step 6: Final answer
    x = 994,517.70

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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.