Home / 840,004.80-1,259,861.40-307,251.60

Finding the Fourth Proportional to 840,004.80, 1,259,861.40 and 307,251.60

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Solution

The fourth proportional to 840,004.80, 1,259,861.40 and 307,251.60 is: 460,824.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,004.80 : 1,259,861.40 = 307,251.60 : x
  2. Step 2: Convert to fraction form
    840,004.80/1,259,861.40 = 307,251.60/x
  3. Step 3: Cross multiply
    840,004.80x = 1,259,861.40 × 307,251.60
  4. Step 4: Simplify right side
    840,004.80x = 387,094,430,928.24
  5. Step 5: Solve for x
    x = 387,094,430,928.24/840,004.80
  6. Step 6: Final answer
    x = 460,824.07

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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.