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Finding the Fourth Proportional to 611,802.72, 917,543.70 and 274,654.80

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Solution

The fourth proportional to 611,802.72, 917,543.70 and 274,654.80 is: 411,910.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,802.72 : 917,543.70 = 274,654.80 : x
  2. Step 2: Convert to fraction form
    611,802.72/917,543.70 = 274,654.80/x
  3. Step 3: Cross multiply
    611,802.72x = 917,543.70 × 274,654.80
  4. Step 4: Simplify right side
    611,802.72x = 252,007,781,414.76
  5. Step 5: Solve for x
    x = 252,007,781,414.76/611,802.72
  6. Step 6: Final answer
    x = 411,910.20

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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.