Home / 684,858.40-1,027,287.60-311,610.40

Finding the Fourth Proportional to 684,858.40, 1,027,287.60 and 311,610.40

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Solution

The fourth proportional to 684,858.40, 1,027,287.60 and 311,610.40 is: 467,415.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,858.40 : 1,027,287.60 = 311,610.40 : x
  2. Step 2: Convert to fraction form
    684,858.40/1,027,287.60 = 311,610.40/x
  3. Step 3: Cross multiply
    684,858.40x = 1,027,287.60 × 311,610.40
  4. Step 4: Simplify right side
    684,858.40x = 320,113,499,951.04
  5. Step 5: Solve for x
    x = 320,113,499,951.04/684,858.40
  6. Step 6: Final answer
    x = 467,415.60

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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.