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Finding the Fourth Proportional to 667,445.60, 1,001,254.80 and 330,658.40

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Solution

The fourth proportional to 667,445.60, 1,001,254.80 and 330,658.40 is: 496,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,445.60 : 1,001,254.80 = 330,658.40 : x
  2. Step 2: Convert to fraction form
    667,445.60/1,001,254.80 = 330,658.40/x
  3. Step 3: Cross multiply
    667,445.60x = 1,001,254.80 × 330,658.40
  4. Step 4: Simplify right side
    667,445.60x = 331,073,310,160.32
  5. Step 5: Solve for x
    x = 331,073,310,160.32/667,445.60
  6. Step 6: Final answer
    x = 496,030.40

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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.