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Finding the Fourth Proportional to 570,782.12, 787,685.11 and 344,383.88

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Solution

The fourth proportional to 570,782.12, 787,685.11 and 344,383.88 is: 475,253.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,782.12 : 787,685.11 = 344,383.88 : x
  2. Step 2: Convert to fraction form
    570,782.12/787,685.11 = 344,383.88/x
  3. Step 3: Cross multiply
    570,782.12x = 787,685.11 × 344,383.88
  4. Step 4: Simplify right side
    570,782.12x = 271,266,049,600.64
  5. Step 5: Solve for x
    x = 271,266,049,600.64/570,782.12
  6. Step 6: Final answer
    x = 475,253.24

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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.