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Finding the Fourth Proportional to 608,714.60, 911,103.60 and 431,567.60

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Solution

The fourth proportional to 608,714.60, 911,103.60 and 431,567.60 is: 645,955.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,714.60 : 911,103.60 = 431,567.60 : x
  2. Step 2: Convert to fraction form
    608,714.60/911,103.60 = 431,567.60/x
  3. Step 3: Cross multiply
    608,714.60x = 911,103.60 × 431,567.60
  4. Step 4: Simplify right side
    608,714.60x = 393,202,794,003.36
  5. Step 5: Solve for x
    x = 393,202,794,003.36/608,714.60
  6. Step 6: Final answer
    x = 645,955.91

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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.