Home / 847,789.05-1,271,684.03-315,240.88

Finding the Fourth Proportional to 847,789.05, 1,271,684.03 and 315,240.88

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Solution

The fourth proportional to 847,789.05, 1,271,684.03 and 315,240.88 is: 472,861.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,789.05 : 1,271,684.03 = 315,240.88 : x
  2. Step 2: Convert to fraction form
    847,789.05/1,271,684.03 = 315,240.88/x
  3. Step 3: Cross multiply
    847,789.05x = 1,271,684.03 × 315,240.88
  4. Step 4: Simplify right side
    847,789.05x = 400,886,798,650.12
  5. Step 5: Solve for x
    x = 400,886,798,650.12/847,789.05
  6. Step 6: Final answer
    x = 472,861.49

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Half scale
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Double scale
Find fourth proportional to 847,790.05, 1,271,685.53 and 315,241.88
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.