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Finding the Fourth Proportional to 438,634.40, 657,951.60 and 333,658.40

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Solution

The fourth proportional to 438,634.40, 657,951.60 and 333,658.40 is: 500,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,634.40 : 657,951.60 = 333,658.40 : x
  2. Step 2: Convert to fraction form
    438,634.40/657,951.60 = 333,658.40/x
  3. Step 3: Cross multiply
    438,634.40x = 657,951.60 × 333,658.40
  4. Step 4: Simplify right side
    438,634.40x = 219,531,078,133.44
  5. Step 5: Solve for x
    x = 219,531,078,133.44/438,634.40
  6. Step 6: Final answer
    x = 500,487.60

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1.5x scale

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.