Home / 670,200.60-1,005,300.90-641,170.20

Finding the Fourth Proportional to 670,200.60, 1,005,300.90 and 641,170.20

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Solution

The fourth proportional to 670,200.60, 1,005,300.90 and 641,170.20 is: 961,755.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,200.60 : 1,005,300.90 = 641,170.20 : x
  2. Step 2: Convert to fraction form
    670,200.60/1,005,300.90 = 641,170.20/x
  3. Step 3: Cross multiply
    670,200.60x = 1,005,300.90 × 641,170.20
  4. Step 4: Simplify right side
    670,200.60x = 644,568,979,113.18
  5. Step 5: Solve for x
    x = 644,568,979,113.18/670,200.60
  6. Step 6: Final answer
    x = 961,755.30

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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.