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Finding the Fourth Proportional to 453,667.10, 680,043.20 and 285,307.72

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Solution

The fourth proportional to 453,667.10, 680,043.20 and 285,307.72 is: 427,673.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,667.10 : 680,043.20 = 285,307.72 : x
  2. Step 2: Convert to fraction form
    453,667.10/680,043.20 = 285,307.72/x
  3. Step 3: Cross multiply
    453,667.10x = 680,043.20 × 285,307.72
  4. Step 4: Simplify right side
    453,667.10x = 194,021,571,766.86
  5. Step 5: Solve for x
    x = 194,021,571,766.86/453,667.10
  6. Step 6: Final answer
    x = 427,673.89

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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.