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Finding the Fourth Proportional to 570,372.80, 787,133.04 and 328,636.64

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Solution

The fourth proportional to 570,372.80, 787,133.04 and 328,636.64 is: 453,529.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,372.80 : 787,133.04 = 328,636.64 : x
  2. Step 2: Convert to fraction form
    570,372.80/787,133.04 = 328,636.64/x
  3. Step 3: Cross multiply
    570,372.80x = 787,133.04 × 328,636.64
  4. Step 4: Simplify right side
    570,372.80x = 258,680,757,498.59
  5. Step 5: Solve for x
    x = 258,680,757,498.59/570,372.80
  6. Step 6: Final answer
    x = 453,529.27

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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.