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Finding the Fourth Proportional to 604,634.20, 906,951.30 and 427,487.20

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Solution

The fourth proportional to 604,634.20, 906,951.30 and 427,487.20 is: 641,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,634.20 : 906,951.30 = 427,487.20 : x
  2. Step 2: Convert to fraction form
    604,634.20/906,951.30 = 427,487.20/x
  3. Step 3: Cross multiply
    604,634.20x = 906,951.30 × 427,487.20
  4. Step 4: Simplify right side
    604,634.20x = 387,710,071,773.36
  5. Step 5: Solve for x
    x = 387,710,071,773.36/604,634.20
  6. Step 6: Final answer
    x = 641,230.80

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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.