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Finding the Fourth Proportional to 602,783.60, 903,138.60 and 318,052.40

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Solution

The fourth proportional to 602,783.60, 903,138.60 and 318,052.40 is: 476,531.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,783.60 : 903,138.60 = 318,052.40 : x
  2. Step 2: Convert to fraction form
    602,783.60/903,138.60 = 318,052.40/x
  3. Step 3: Cross multiply
    602,783.60x = 903,138.60 × 318,052.40
  4. Step 4: Simplify right side
    602,783.60x = 287,245,399,262.64
  5. Step 5: Solve for x
    x = 287,245,399,262.64/602,783.60
  6. Step 6: Final answer
    x = 476,531.54

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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.