Home / 698,769.20-1,048,153.80-647,447.60

Finding the Fourth Proportional to 698,769.20, 1,048,153.80 and 647,447.60

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Solution

The fourth proportional to 698,769.20, 1,048,153.80 and 647,447.60 is: 971,171.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,769.20 : 1,048,153.80 = 647,447.60 : x
  2. Step 2: Convert to fraction form
    698,769.20/1,048,153.80 = 647,447.60/x
  3. Step 3: Cross multiply
    698,769.20x = 1,048,153.80 × 647,447.60
  4. Step 4: Simplify right side
    698,769.20x = 678,624,662,240.88
  5. Step 5: Solve for x
    x = 678,624,662,240.88/698,769.20
  6. Step 6: Final answer
    x = 971,171.40

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Similar ratio
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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.