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Finding the Fourth Proportional to 504,427.40, 756,935.50 and 279,976.20

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Solution

The fourth proportional to 504,427.40, 756,935.50 and 279,976.20 is: 420,127.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,427.40 : 756,935.50 = 279,976.20 : x
  2. Step 2: Convert to fraction form
    504,427.40/756,935.50 = 279,976.20/x
  3. Step 3: Cross multiply
    504,427.40x = 756,935.50 × 279,976.20
  4. Step 4: Simplify right side
    504,427.40x = 211,923,924,935.10
  5. Step 5: Solve for x
    x = 211,923,924,935.10/504,427.40
  6. Step 6: Final answer
    x = 420,127.70

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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.