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Finding the Fourth Proportional to 570,467.12, 787,239.24 and 328,660.88

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Solution

The fourth proportional to 570,467.12, 787,239.24 and 328,660.88 is: 453,548.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,467.12 : 787,239.24 = 328,660.88 : x
  2. Step 2: Convert to fraction form
    570,467.12/787,239.24 = 328,660.88/x
  3. Step 3: Cross multiply
    570,467.12x = 787,239.24 × 328,660.88
  4. Step 4: Simplify right side
    570,467.12x = 258,734,741,388.93
  5. Step 5: Solve for x
    x = 258,734,741,388.93/570,467.12
  6. Step 6: Final answer
    x = 453,548.91

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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.