Home / 698,692.80-1,048,039.20-486,116.40

Finding the Fourth Proportional to 698,692.80, 1,048,039.20 and 486,116.40

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Solution

The fourth proportional to 698,692.80, 1,048,039.20 and 486,116.40 is: 729,174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,692.80 : 1,048,039.20 = 486,116.40 : x
  2. Step 2: Convert to fraction form
    698,692.80/1,048,039.20 = 486,116.40/x
  3. Step 3: Cross multiply
    698,692.80x = 1,048,039.20 × 486,116.40
  4. Step 4: Simplify right side
    698,692.80x = 509,469,042,962.88
  5. Step 5: Solve for x
    x = 509,469,042,962.88/698,692.80
  6. Step 6: Final answer
    x = 729,174.60

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Double scale
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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.