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Finding the Fourth Proportional to 626,847.60, 940,885.80 and 311,660.40

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Solution

The fourth proportional to 626,847.60, 940,885.80 and 311,660.40 is: 467,796.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,847.60 : 940,885.80 = 311,660.40 : x
  2. Step 2: Convert to fraction form
    626,847.60/940,885.80 = 311,660.40/x
  3. Step 3: Cross multiply
    626,847.60x = 940,885.80 × 311,660.40
  4. Step 4: Simplify right side
    626,847.60x = 293,236,844,782.32
  5. Step 5: Solve for x
    x = 293,236,844,782.32/626,847.60
  6. Step 6: Final answer
    x = 467,796.07

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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.