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Finding the Fourth Proportional to 611,026.80, 916,172.01 and 274,006.50

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Solution

The fourth proportional to 611,026.80, 916,172.01 and 274,006.50 is: 410,844.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,026.80 : 916,172.01 = 274,006.50 : x
  2. Step 2: Convert to fraction form
    611,026.80/916,172.01 = 274,006.50/x
  3. Step 3: Cross multiply
    611,026.80x = 916,172.01 × 274,006.50
  4. Step 4: Simplify right side
    611,026.80x = 251,037,085,858.07
  5. Step 5: Solve for x
    x = 251,037,085,858.07/611,026.80
  6. Step 6: Final answer
    x = 410,844.64

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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.