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Finding the Fourth Proportional to 570,321.09, 787,126.01 and 328,556.61

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Solution

The fourth proportional to 570,321.09, 787,126.01 and 328,556.61 is: 453,455.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,321.09 : 787,126.01 = 328,556.61 : x
  2. Step 2: Convert to fraction form
    570,321.09/787,126.01 = 328,556.61/x
  3. Step 3: Cross multiply
    570,321.09x = 787,126.01 × 328,556.61
  4. Step 4: Simplify right side
    570,321.09x = 258,615,451,845.64
  5. Step 5: Solve for x
    x = 258,615,451,845.64/570,321.09
  6. Step 6: Final answer
    x = 453,455.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.