Home / 804,004.20-1,206,006.30-426,090.60

Finding the Fourth Proportional to 804,004.20, 1,206,006.30 and 426,090.60

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Solution

The fourth proportional to 804,004.20, 1,206,006.30 and 426,090.60 is: 639,135.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,004.20 : 1,206,006.30 = 426,090.60 : x
  2. Step 2: Convert to fraction form
    804,004.20/1,206,006.30 = 426,090.60/x
  3. Step 3: Cross multiply
    804,004.20x = 1,206,006.30 × 426,090.60
  4. Step 4: Simplify right side
    804,004.20x = 513,867,947,970.78
  5. Step 5: Solve for x
    x = 513,867,947,970.78/804,004.20
  6. Step 6: Final answer
    x = 639,135.90

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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.