Home / 694,506.40-1,043,986.80-645,200.80

Finding the Fourth Proportional to 694,506.40, 1,043,986.80 and 645,200.80

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Solution

The fourth proportional to 694,506.40, 1,043,986.80 and 645,200.80 is: 969,870.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,506.40 : 1,043,986.80 = 645,200.80 : x
  2. Step 2: Convert to fraction form
    694,506.40/1,043,986.80 = 645,200.80/x
  3. Step 3: Cross multiply
    694,506.40x = 1,043,986.80 × 645,200.80
  4. Step 4: Simplify right side
    694,506.40x = 673,581,118,549.44
  5. Step 5: Solve for x
    x = 673,581,118,549.44/694,506.40
  6. Step 6: Final answer
    x = 969,870.28

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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.