Home / 804,043.20-1,206,064.80-426,129.60

Finding the Fourth Proportional to 804,043.20, 1,206,064.80 and 426,129.60

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Solution

The fourth proportional to 804,043.20, 1,206,064.80 and 426,129.60 is: 639,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,043.20 : 1,206,064.80 = 426,129.60 : x
  2. Step 2: Convert to fraction form
    804,043.20/1,206,064.80 = 426,129.60/x
  3. Step 3: Cross multiply
    804,043.20x = 1,206,064.80 × 426,129.60
  4. Step 4: Simplify right side
    804,043.20x = 513,939,910,798.08
  5. Step 5: Solve for x
    x = 513,939,910,798.08/804,043.20
  6. Step 6: Final answer
    x = 639,194.40

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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.