Home / 812,875.40-1,220,004.30-364,286.60

Finding the Fourth Proportional to 812,875.40, 1,220,004.30 and 364,286.60

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Solution

The fourth proportional to 812,875.40, 1,220,004.30 and 364,286.60 is: 546,739.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,875.40 : 1,220,004.30 = 364,286.60 : x
  2. Step 2: Convert to fraction form
    812,875.40/1,220,004.30 = 364,286.60/x
  3. Step 3: Cross multiply
    812,875.40x = 1,220,004.30 × 364,286.60
  4. Step 4: Simplify right side
    812,875.40x = 444,431,218,432.38
  5. Step 5: Solve for x
    x = 444,431,218,432.38/812,875.40
  6. Step 6: Final answer
    x = 546,739.66

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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.