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Finding the Fourth Proportional to 504,728.80, 756,056.40 and 255,551.20

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Solution

The fourth proportional to 504,728.80, 756,056.40 and 255,551.20 is: 382,801.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,728.80 : 756,056.40 = 255,551.20 : x
  2. Step 2: Convert to fraction form
    504,728.80/756,056.40 = 255,551.20/x
  3. Step 3: Cross multiply
    504,728.80x = 756,056.40 × 255,551.20
  4. Step 4: Simplify right side
    504,728.80x = 193,211,120,287.68
  5. Step 5: Solve for x
    x = 193,211,120,287.68/504,728.80
  6. Step 6: Final answer
    x = 382,801.85

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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.