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Finding the Fourth Proportional to 461,780.80, 691,504.80 and 303,150.40

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Solution

The fourth proportional to 461,780.80, 691,504.80 and 303,150.40 is: 453,959.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,780.80 : 691,504.80 = 303,150.40 : x
  2. Step 2: Convert to fraction form
    461,780.80/691,504.80 = 303,150.40/x
  3. Step 3: Cross multiply
    461,780.80x = 691,504.80 × 303,150.40
  4. Step 4: Simplify right side
    461,780.80x = 209,629,956,721.92
  5. Step 5: Solve for x
    x = 209,629,956,721.92/461,780.80
  6. Step 6: Final answer
    x = 453,959.88

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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.