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Finding the Fourth Proportional to 511,628.80, 768,134.40 and 325,004.80

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Solution

The fourth proportional to 511,628.80, 768,134.40 and 325,004.80 is: 487,946.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,628.80 : 768,134.40 = 325,004.80 : x
  2. Step 2: Convert to fraction form
    511,628.80/768,134.40 = 325,004.80/x
  3. Step 3: Cross multiply
    511,628.80x = 768,134.40 × 325,004.80
  4. Step 4: Simplify right side
    511,628.80x = 249,647,367,045.12
  5. Step 5: Solve for x
    x = 249,647,367,045.12/511,628.80
  6. Step 6: Final answer
    x = 487,946.27

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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.