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Finding the Fourth Proportional to 504,614.40, 756,921.60 and 485,260.80

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Solution

The fourth proportional to 504,614.40, 756,921.60 and 485,260.80 is: 727,891.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,614.40 : 756,921.60 = 485,260.80 : x
  2. Step 2: Convert to fraction form
    504,614.40/756,921.60 = 485,260.80/x
  3. Step 3: Cross multiply
    504,614.40x = 756,921.60 × 485,260.80
  4. Step 4: Simplify right side
    504,614.40x = 367,304,381,153.28
  5. Step 5: Solve for x
    x = 367,304,381,153.28/504,614.40
  6. Step 6: Final answer
    x = 727,891.20

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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.